Eisenmann on SLK 32 AMG - Mercedes Benz SLK Forum

General Discussion Topics must pertain to all 3 generations of SLK - R170, R171 and R172

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#1 Old 07-14-2009
SLK_32_AMG
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Eisenmann on SLK 32 AMG

Hola a todos
Hello everyone

I've been searching everywhere, including countless hours of reviewing this website, to find a comrade who may have installed Eisenmann (or Brabus, Vaeth, Kleeman, etc.) exhausts on an SLK 32 AMG. There's lots of info on non-AMG R170s (great job guys!) but none regarding the specific exhaust upgrade for the AMG.

I have been searching everywhere, even speaking directly to the guys at Eisenmann, Kleeman and Vaeth, but it seems that this car is rare everywhere, including Germany, nevermind Spain. I feel a bit like a pioneer here but there must be someone out there who has done the exhaust mod on the 32 AMG (someone must have gone through what I am going now!).

The sound of the current original 2xOval AMG mufflers is quite enjoyable, just the right tone for a supercharged V6, which gets very aggressive at mid/high rpm. I am not a great fan of modifications - my car is absolutely stock original - but I mean to keep this car for years to come and I believe a fuller, rounder, deeper sound from down under below 2000 rpm would be the icing on the cake for this car.

I have seen a couple of clips of R170s on Eisenmann's and the sound on the 230Ks is unbelievable, can't imagine what it would sound like on the 32 AMG (according to the Eisenmann person I contacted, for resasons beyond my capabilities, the mufflers' sound/performance excel in combination with supercharged engines: V6 + Kompressor =).

I would gladly welcome any recommendations or sharing of experiences on this and other matters. If I do find a comrade with an SLK 32 AMG with a modded exhaust it would be like finding a brother you never know existed!!

Cheers from sunny Spain

Last edited by SLK_32_AMG; 09-06-2009 at 11:46 AM.
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#2 Old 07-14-2009
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Quote:
Originally Posted by SLK_32_AMG View Post
.... but none regarding the specific exhaust upgrade for the AMG.....
Be careful when making that statement. Most aftermarket exhaust system are not designed for the specific car. I doubt there is a aftermarket exhaust system designed specifically for the SLK32.

You may get the sound you like with an aftermarket exhaust system but will be detrimental to the engineering of the system.

It's your call.

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#3 Old 07-14-2009
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Yes heard the Eisenmann on the 320, if you do get the exhaust make sure you get the Evosport headers or other ie Kleemann with tune , pulley and filters for more power.

06 SLK55 AMG (Kleemann K2)
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#4 Old 07-15-2009
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Exclamation Aftermarket specific for 32 AMG + other mods

Hi guys, and thanks for the feedback

I have narrowed down the search a bit. Both Brabus and Kleemann used to produce model specific mufflers for the 32 AMG but these were discontinued a few years back - due to the scarcity of the car, they were made to order only, so I doubt there are any of those hanging about waiting for me to buy them (but who knows).

On the other hand, I have managed to pin down a couple of mufflers (section 3 only) specific to the 32 AMG made by Eisenmann and Vaeth.

- Eisenmann have two tip variants, 2xRound or 2xOval, the latter being preferable due to it being visually almost identical to the original AMGs, and two sound variants, Sport and Race - the Race being like having the devil himself jammed into the muffler.

SLK 32 AMG (260 kW)
Artikel/Endrohr -- Durchmesser -- Bestellnr. -- Preis
ESD -- 2x ø 83mm -- D7233.00831 -- 833,00 €
ESD -- 2x 90x70mm -- D7233.02240 -- 856,80 €

I don't know what your view is, but I think the price is very competitive for a state-of-the-art product (I have been told Eisenmann is the best of the best in craftmanship and quality). It's a relatively cheap mod, the Eisenmann's on the 350 R171 for example cost twice as much at Eur1,500.

- Vaeth has also got model specific mufflers for the 32 AMG, with an 2xOval option for sure, but their service guy is to come back to me with more options - no idea on prices here.

http://www.vaeth.com/tuning_modelle_...-roadster_r170

The advantage of the Vaeth is that apparently these can be clamped vs. welded (which is inevitable in the case of the Eisenmann), which gives me flexibility to go back to the original AMGs if I need to. We have to go through a TüV-like inspection every 2 years in Spain and if the sound/emissions are too loud, I may have to put back the original (just for the exam!!). The homologation process is a nightmare in Spain as the laws and procedures are still those of Franco's time and have not yet adapted to the real marketplace - even bribery could still be used to 'ease' the inspection process if necessary (yes, in the European Union in 2009!).

By the way, does a change in noise levels necessarily involve higher emissions?(never cleared that up in my mind).

My primary goal is to keep the car for years to come and the secondary (or terciary) matter is not just to improve the sound, which is quite good especially in high revs, but to get it where I want it to be (deeper, fuller, rounder). That's why I am only opting for a change in muffler (section 3) but I will certainly stop moving forward if this will adversely affect the engineering of the system (would this really be the case with just a muffler change?).

On the other matter, I have been reading about other mods such as those kindly mentioned by you, Alroumi. However, and following on from the latter paragraph, my car is 100% original and I would like to keep it as much as possible in that way, especially since I am actually more than happy with the car's current response - it is already very quick. The sound is really an aesthetic issue, it's the icing on the cake for me, but as you can see I am putting a lot of thought even on a 'simple' muffler change - damn it, it's like being virgin again!

However, more than happy to consider other mods if these don't affect the long-term durability of the engineering (or if they actually help improve such durability).

Anyway, I think the key here is to find 'my other half'...a brave man, a pioneer, someone who has gone out in the dark all on his own and gone through all the 'dirty work' I am going through now... that is a man who owns an SLK 32 AMG and has modified his mufflers...where are youuuuuuu!?

Very many thanks for the info chaps and sorry about the long novel here. Any other feedback/thoughts would be very welcome. I trust you guys, keep up the good work!!

Darío

ps. the absolute best would be something like the On/Off systems that I've seen in buddies' Maserati GranTurismo and Porsche 911. Factory installed, with the on/off switch in the cabin, ideal for long trips and to avoid upsetting neighbours, law enforcement officials et al.
#5 Old 07-15-2009
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Quick Update

Just a quick update...maybe useful to someone in future

I went to the mechanic today and we came to the conclusion that if cutting and welding and/or clamping is required to connect the new muffler, as in the case of both Eisenmann and Vaeth, it means one of three things:

(i) the connecting pipe in the Eisenmann is longer than the current AMG, therefore the need to cut and weld; or

(ii) the connecting pipes differ in diametre, which could again explain the need for welding; or

(iii) the original AMGs are not fixed by clamps, it's fixed so cutting is needed, i.e. no chance of a bolt-off, bolt-on operation.

My question is: what is the point of producing a muffler which is supposed to be made for a specific car but which becomes a pain in the neck to install? Maybe it's AMGs way of saying that this is the best setting for this car, and at the same time protecting its market from the competition (who are good and getting better).

Any thoughts are very welcome. Cheers
#6 Old 07-15-2009
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Hola

Eisenmann for the 32AMG ain't street legal in Germany (no tüv papers). That may be why you struggle to find any of them.....
It sounds pretty good though http://www.sport-wheels.de/html/downloads.php?video=217

Supersprint is famous for the sound, but it seems you have to buy a complete system. That could mean it's "tuned" for a 32, so you just don't attach a "trumpet" at the rear.
http://www.supersprint.com/USP000merslk0.asp
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#7 Old 07-17-2009
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Update

Cheers Gabus.

I have been contacted by an Eisenmann delegation in Spain and there seems to be a possibility of a bolt-off/bolt-on procedure as, apparently, they have previously done it on a couple 32 AMGs. This is to by-pass the TüV equivalent in Spain (ITV) every two of years because homologation is not possible (not even on the quieter/more subtle Sport version: ).

It's also important to be able to go back to the car's full stock condition, as it now is, so I am beginning to think that I'll only go for the mod if there's a 'straightforward' way back.

In any case, full marks for the staff both at Eisenmann and Vaeth: very professional .

Again, any info on previous experiences would be great.

Cheers
#8 Old 07-30-2009
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Hi there "SLK 32 AMG" and to all other members on the forum.

In answer to your request for someone else with an Eisenmann exhaust, I have an SLK32 fitted with one. It's a twin oval design and was fitted in mainland Europe I believe. I've got no idea what the original AMG one sounded like as it was fitted by the previous owner in order to add some BHP (another 12 apparently), further improve the sound and life of the exhaust. I can confirm that it makes an amazing sound but I've obviously got no idea how it compares in tone to an original AMG exhaust as I've only ever seen a couple parked-up, however I've parked side by side with another and the original looks more oval than mine.

All I can say is that I'm in a constant dilema as to whether to listen to music, or the engine/exhaust and if there's a tunnel, bridge on cutting on the road ahead then there's definitely no contest. Sad as it may sound I've even tried recording the exhaust note with the help of an mp3 voice recorder, but all could only pick up road noise! I guess the best way to hear it is to be following me, or inside that tunnel/under that bridge. Even on normal streets it's great to 'tickle' at low revs as it gives a great gurgle rasp sound, but once again I've got no idea whether that's much different than the AMG 'standard' design.

I hope that Spain gets to hear your exhaust - the price is very reasonable - the previous owner on my car apparently paid £1,500 with fitting (when the exchange rate was nearer 1.5 Euro to the £).

PS. I've got no idea how it's fitted but can have a look if you tell me what to look for send me a private message.
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#9 Old 07-31-2009
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All I can tell you is that with supercharged engines a little goes a long way in terms of noise so an exhaust box is as far as your likely to want to go. Noise was so problematic when I went from 230 n/a to 310 s/c on my lotus with type r engine that to get back to a decent noise level took me 6 redesigns of the system eventually going to a twin box system. Heat is another problem but thats another story. However type r suffer from high Hz noise issues due to the revs and vtec that your V6 isnt capable of. My advice is change very little.
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#10 Old 07-31-2009
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Update

Thanks for the feedback guys, this is excellent.

I took the car to a mechanic and we had a good look underneath. The problem is that the stock AMG section 3 exhaust is one solid/single piece that goes from the end of the catalytic converters, located approximately in the middle of the car (underneath of course), all the way to the tip of the muffler. Whole thing is approximately just over 1 metre long (muffler and pipe connecting to cats).

The Eisenmann however is just a muffler with a short connecting pipe (whole thing 50cm max). This means that the original pipe needs to be cut in the narrow part just before the muffler, and apparently this bit is inserted inside the connecting Eisenmann pipe, which is slightly wider, and then welded or clamped - the original narrow pipe should fit inside the Eisenmann pipe.

Conclusion: there's no way around cutting the original. This is putting me off a bit because I don't know if it is worth cutting the stock, which looks like an expensive single piece (all the way to cats), to obtain a result which I don't really know if I will like - there's no easy way back. Why didn't Eisenmann make it cat-back for it to be a bolt-off bolt-on operation, especially if the exhaust is made specifically for the 32AMG?

OutEast, thanks for showing up, you're probably the key man here (32AMG+Eisenmann: as rare as it can get). You said you did not install the exhaust yourself but I would be grateful if you could kindly answer a couple of questions.

- Have you got the Sport (quieter) or the Race (louder) version? The guys at Eisenmann insisted on the Sport as the Race could go way too loud - as Legin kindly points out, this may be due to it being a V6 supercharged engine. I still have my doubts: from what I have read, Sport may be close to the AMG and Race may be OTT - based on the sound on the R170 230Ks and 320s on the web, it does not seem too loud, but the key here is to check the sound of the mufflers on the 32AMG, which I can't find anywhere.

- Is there a chance of taking some pics from underneath the car? This would be extremely helpful in order to check if it was welded or clamped, and also to find out where the stock pipe has been cut.

- Finally and probably the most important bit to give me the final push, it would be amazing if you could send me (or post, for future reference) a recorded sample - just parked, giving it some right foot up to 4-5Krpm for a few seconds (careful: car should be warm) with a mate or someone filming from behind the car would be smashing - mobile phone probably the easiest way.

I think this is great not only for me but for future reference as info on these specific matters (32AMG+Eisenmann) is rather scarce.

Many thanks for your help

Cheers
#11 Old 07-31-2009
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Sorry, can't send PMs yet

OutEast, your post is exactly the info I was looking for. It sounds amazing then.

Both 2xOval and 2xRound design, in either Sport or Race version, cost 900 Euros shipping included directly from Eisenmann - if it is that good, it's a steal. Add cost of 2-3 hours max to install.

The issue for me is the TüV equivalent in Spain (ITV), where the car is inspected every two years (similar to MOT?). Visually, the exhaust will be the same in the eyes of the inspector (except AMG vs. Eisenmann logo on tips). The problem is that they can here you coming from a mile away and once inside the inspection area it must be clearly noticeable - do you notice people having a second (or third) look at your car when they hear it coming?

The homologation in Spain is not possible so I can't install it permanently. Therefore the need for a bolt-on bolt-off operation, to keep it as simple as possible and have the ability to revert to the AMGs to bypass the test or to go back if it is way too loud. I need to figure something out (pics would be very useful here).

However, the great thing about it is that I usually drive D (auto), mostly town driving with low rev as there's plenty of torque so I could be quite happy with the Race version which also leaves some reserve sound for a revvy spin in the mountains.

I'll try to send you the sound with the stock AMGs, maybe that'll help too.

Cheers

Darío

ps. btw, check out this crazy guy (genius!) with his amazing AMG wheels - 1,000 Euros each!! http://c280.pmneo.de/index.php?content=gallery&gid=358
#12 Old 08-04-2009
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Hi 'SLK 32 AMG'

I'll take some pics tomorrow afternoon but a video might have to wait a few more days. The car always sounds better on the move than reving without motion. I do get a few looks from pedestrians in response to the sound of the car, but there are quite a few nice cars around here plus heavily modified hatch-backs, so I suspect that (like me) most people choose not to turn and look too often.

As for whether it's the 'race' or 'sports' version of the exhaust, I've got no idea I'm afraid. Perhaps the dudes at Eisenmann will be able to tell you if you show them the pics - if so please let me know.

Have you seen this video:

http://www.eisenmann-sportauspuff.ov...=Mercedes-Benz

To me mine doesn't sound quite as roaring as the one in the above video, but then since I'm usually ahead of most of the sound perhaps it does?
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#13 Old 08-06-2009
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Below are some photo's of the Eisenmann exhaust on my SLK32 AMG.
I hope they show what you are looking for? If you find out from the Identofcationplate on the exhaust what type it is (Sport or Race?) then please let me know? Also please let me know if you have any more questions (PM me your e-mail address & I'll send you a video in a few days). Best regards OutEast
Attached Images
File Type: jpg SLK32 AMG - Eisenmann - rear view.jpg (46.8 KB, 20 views)
File Type: jpg SLK32 AMH - Eisenmann - Closer view of exhaust.JPG (59.6 KB, 15 views)
File Type: jpg SLK32 AMG - Eisenmann - closer view of exhaust tips.JPG (58.7 KB, 11 views)
File Type: jpg SLK32 AMG - Eisenmann - Exhaust plate.JPG (64.2 KB, 11 views)
File Type: jpg SLK32 AMG - Eisenmann - pipe to exhaust box.JPG (61.3 KB, 13 views)
File Type: jpg SLK32 AMG - Eisenmann - Pipe work underneath.JPG (52.6 KB, 13 views)
File Type: jpg SLK32 AMG - Eisenmann - Side of exhaust.JPG (67.7 KB, 11 views)
File Type: jpg SLK32 AMG - Eisenmann - Underside of car 1.JPG (43.7 KB, 13 views)
File Type: jpg SLK32 AMG - Eisenmann - Underside of car 2.JPG (44.5 KB, 15 views)
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#14 Old 08-07-2009
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Exclamation Many thanks + Update

Wow, this information is invaluable - thank you so much for the effort.

I can't PM yet (need to reach 15 posts I believe) but it may be interesting for other people in future to refer to this thread, as the car is rare and specific info is scarce.

Congrats on the colour - I don't have a favourite car colour in general, but brilliant-silver metallic looks just perfect (like mine ).

From the first 3 pics, the tips look round but maybe this is from the angle from which the pic is taken. Anyhow, you can see that the space in the rear bumper is obviously made for the stock AMG muffler (2xoval tips), which 'fills up' all the space in the rear bumper that it was made for, i.e. with the stock AMG you don't see the actual muffler, only the oval tips. In your case, the tips don't 'fill up' the space and therefore you see the actual muffler, and neither Eisenmann's 2xround nor 2xoval (also offered) are big enough to cover the space - I am told by Eisenmann that even their oval-tipped version is smaller than the AMG.
BUT if you look at it closely, my exhaust pipes (stock AMG muffler) are actually round and rather narrow, they have just plugged two big oval tips for aesthetic reasons (which also fill up the cut in the rear bumper). So with the Eisenmann 'what you see is what you get' - no gimmicks - therefore the difference in sound.

I'll try to find out if it is Race or Sport by the codes I see on the pic, but from the description of the sound you gave us, it is most certainly Sport. According to Eisenmann, Race is, again, what it says on the box, i.e. to drive really high rev and sound like an F1 (maybe the right sound for a Lambo Diablo, but not for a Mercedes really). The Sport, on the other hand, is deep, more 'full of seeds' is the term they use, with a fuller sound from low revs. Think of it as very high volume in higher frequencies (mid-treble) vs. higher volume in lower frequencies (mid-bass). Again, this is what has been explained to me. Maybe by now you know which one you got - I am going for Sport no doubt.

Another pic of yours seems to show that the OEM resonator/silencer(?), which is the 'box' half-way between the muffler and the two cats towards the mid-front of the car, is still there, i.e. it should be a standard Eisenmann installation for the 32AMG. I bring this up because the section 3 (among others) of the exhaust system, the one solid piece from the cats all the way to the muffler, is different to all other R170s, including the 320 V6. See pics. For other R170s, the Eisenmann muffler is produced with a connection pipe of about 50cms inside which the OEM pipe (previously cut) is introduced and connected. In the 32AMG it comes with a connecting tube of only 6cms (instead of 50), so that the cut in the OEM needs to be done exactly at the intersection between the narrow pipe leading to the muffler and the muffler itself. And this is why there is not a possibility of a clamping solution, the connection is too short, the OEM narrow tube has to be welded almost directly to the Eisenmann muffler box. Your pic called 'pipe exhaust box', number 5 I believe, seems to show this but would you mind double checking where exactly is it connected, how far away from the actual Eisenmann muffler? The above is all info coming from Eisenmann but you are surely in the best position to confirm. A pic that shows how/where it is connected would be smashing!

I spoke to a mechanic who does install Eisenmann on various cars but he wondered if there's a point in changing the muffler but keeping the resonator/silencer (the 'box' between cats and muffler) as it does reduce sound. Again, you're in the best position to confirm if this is irrelevant.

I don't know if I'll go for it if, as it seems, welding is the only solution because I can't revert back and I won't pass the Spanish ITV (MOT, TüV). Clamping would sort this out, but it doesn't seem possible. Additionally, and this is really strange, I am told that the muffler for the 32AMG is a special version that is made only for export (to the USA mainly) and apparently homologation in Europe was never sought! (no ABE and no TüV homologation). How do/will you bypass the MOT?

A lot of help is coming through so I hope we can get to the bottom of this for our own benefit but I also hope to leave some info for other people who will go through the same difficult situation in future (all this issue is transforming me into this: )

I have a recorded a mobile-video too, but I don't know how to upload the ____ thing...

Keep it up!

http://img16.imageshack.us/img16/8900/image001maa.jpg
http://img16.imageshack.us/img16/6156/image002eqv.jpg
http://img16.imageshack.us/img16/5854/image003lef.jpg
http://img16.imageshack.us/img16/2755/slk32amgrear.png
http://img16.imageshack.us/img16/55/...gfrontleft.png
http://img16.imageshack.us/img16/422...frontright.png
http://img16.imageshack.us/img16/1248/slk320rear.png
http://img16.imageshack.us/img16/664...30rear0104.png
http://img16.imageshack.us/img16/126...30rear9800.png

Last edited by SLK_32_AMG; 09-04-2009 at 01:14 PM.
#15 Old 08-07-2009
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I've contacted Eisenmann in the UK and they have confirmed that the codes on the ID plate mean that my car has the Sport version of their exhaust. Thanks for the additional info on the AMG exhaust as I'd always presumed it was oval (not round within oval 'decorative' tips). My exhaust is definifely oval but looks smaller than the stock AMG 'oval'. There are pics below of my car and another SLK32 AMG I discovered in a car park. You can compare the exhausts (the one on the left is stock AMG) the one of the right is mine with the Eisenmann Sport.

The Eisenmann UK website below states that they make the original exhausts for AMG, Brabus & Porsche - it also mentions:
"All Eisenmann exhausts are TUV and DIN EN ISO 9001 Certified" - perhaps this helps you in Spain??

I'll take some more photo's soon for you but since I'm not techie it'd really help us both if you explain or mark on one of those drawings (using some software like Paint) what section you want me to photograph.

Incidentally my car isn't brilliant silver, it's Cubanite Silver (a golden silver colour which looks more golden at nightime or under some lights).

I'm glad the photo's have been useful - your posts have encouraged me to use the manual mode more in order to make my car sing!
Attached Images
File Type: jpg Stock AMG & Eisenmann Exhausts compared.jpg (69.2 KB, 39 views)
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#16 Old 08-09-2009
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Great stuff

Hi there

I thought it would be Sport so thanks for the confirmation. What a useful comparison pic and how lucky to find one parked right beside you - btw, clear difference in colour is quite noticeable side-by-side ('brilliant' obviously brighter and 'cubanit' a little more subtle). In any case, and it's just my opinion, the black ones seem to look a little older - maybe it's just me or maybe it's the specific type of black used on the 32AMG.

I must admit that the fuller/wider AMG tips do a perfect job which is expected since they were designed specifically for the car. However, a closer visual inspection reveals the gimmick discussed above. I wonder, couldn't Eisenmann have simply copied the design or have made something closer to the original? I do prefer the original look to be honest but the sound variance could simply wipe off any visual preference I may have. (can't find any sound files on the web, they're all 230K, 320, ...).

Thanks for the heads-up re certification but it should really say "...,except for the R170 SLK 32 AMG, ...". I like to do everything 100% correctly so, in order to avoid any possible issues, I am going to look for an exact replacement of the whole section 3 exhaust (Part number: A1704901221), so I can take off my original, clean it up and store it properly and then play around with the 'new' one (build a proper bolt-on, not me, but the mechanic).

I am attaching three pics. One is the section 3 with a couple of concentric circles which point to where the theory says that the Eisenmann has been connected. According to theory, there should be a narrowish connection pipe of about 5-6cm coming out of the back of the Eisenmann and this is connected (welded? clamped?) to the OEM narrow pipe - this is indicated by the concentric circles between the Eisenmann and the other 'box' (resonator) in the middle. It is a relatively large area because all I have is the theory but no matter how good it's been welded, it should be noticeable (maybe look also for a difference in pipe diametre, as the Eisenmann connection pipe may be wider. Btw, could you kindly check that the resonator is still in place? (it looks like it from your pics).

The other two pics are form what I have found on the web to be both Oval and Round designs for the 32AMG - would you mind comparing these to what you have installed on your car. It may be that the Round is not actually round but a little bit eliptic and the Oval is really more of an elipse. These pics show that not only the tips are different but also the muffler itself. However, pics on the web "may not correspond with the actual product" therefore best checked in situ.

Glad to hear you're going 'manual' - I am doing the same in anticipation of what the sound might be in future . The only thing is that I find first gear a little too short maybe which, combined with the huge power, rockets you off the green light. (In Spain it is safer to wait a couple of seconds after the light's turned green as people tend to go over lights that have just turned red in the streets which are perpendicular to where you are, even public transport (20 ton buses) - no kidding).

Anyhow, thanks for your help and let's hope we can get to the bottom of this. I think we may be building a point of reference for all 32AMG that want to change the exhaust 'by the book'. Best regards.

ps. I'm no techie either - just like to do things properly I guess.

http://img524.imageshack.us/img524/6...k32amgrear.gif
http://img524.imageshack.us/img524/1192/oval.jpg
http://img524.imageshack.us/img524/2237/roundi.jpg
#17 Old 08-14-2009
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Please find three further pictures of the Eisenmann Sports exhaust on my SLK32 AMG. I hope they show you where the welding was done.

The exhaust tips are definitely oval. I agree with you that the original AMG exhaust looks better and I understand that the previous owner added it to improve the sound and add a little power (c.12BHP according to him and Eisenmann).

I've tried putting up an MP3 I've made but the website won't let me - say's it's 'an invalid file' so I'll e-mail you it. It's of the engine being revved to c.4,500 Revs and then accelerating away. Unfortunately there was a lot of background noise from passing traffic and to be honest the recording doesn't do justice to the sound that it makes. I hope this is all useful - please let me know if you get one, or if anyone has any advice on how to make a decent sound recording!?
Attached Images
File Type: jpg SLK32 AMG - Eisenmann Exhaust 1 - Copy - Copy.jpg (46.8 KB, 15 views)
File Type: jpg SLK32 AMG - Eisenmann Exhaust 2 - Copy - Copy.jpg (57.7 KB, 8 views)
File Type: jpg SLK32 AMG - Eisenmann Exhaust 3 - Copy - Copy.jpg (73.2 KB, 10 views)
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#18 Old 08-15-2009
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SLK 32 AMG - Exhaust choices

Hi OutEast

Thanks for sending the recording, it is clear enough and the effort is much appreciated. Your help was vital in coming to a couple of conclusions.

EISENMANN

Picture 3 is especially illustrative, as you can see that the short pipe from the Eisenmann muffler (about 3") has been welded to the stock pipe, which confirms what was explained to me by Eisenmann Germany. I take the opportunity to thank Sven Johann at Eisenmann GmbH for his highly professional advice.

The Eisenmann (Race or Sport) would be a good option for an exhaust upgrade for the SLK 32 AMG, IF you are able to have it installed permanently. As explained in an earlier post, the Eisenmann exhaust for this specific car has no ABE or TüV homologation as it is a special version that is made only for export (to the USA mainly) and apparently homologation in Europe was never sought. In my case, if the Spanish TüV (ITV) spot the new exhaust at any of the compulsory inspections, I'll be in trouble without ABE or TüV homologation - do check local regulations.

Clamping is not a solution as long as it is not recommended by the manufacturer because the connecting pipe is too short, plus you would lose the 2-year guarantee on the product. A possible solution is to find a spare of the end part of the exhaust system (described in previous posts), second-hand (tough) or new (600 Euros, tough too). You would need to replace the exhaust every time you're up for inspection, in my case every two years.

VÄTH

The other option comes from these Mercedes specialists. Again, I take the opportunity to thank Oliver Martin at Väth for his excellent work at trying to meet the customers' needs. They offer an exhaust muffler (ESD) for the 32AMG which can be welded or clamped, but the cutting of the stock pipe is again required.

However, they have offered the possibility of replacing the whole section 3 of the stock exhaust (including the deletion of the resonator) so it can be bolted on to the stock setion 2 of the exhaust system (see previous pics and posts).

The status regarding homologation needs to be clarified further, but this is not a huge issue as long as you can replace it back to stock to complete the necessary inspections. This works whether you install it via cutting the stock pipe and clamping the Väth, or via replacing the whole section 3. However, proper ABE and TüV homologation would be much preferred (their website says "TÜV-Eintragung" for the 32AMG).

MAKING A CHOICE

The Eisenmann is a difficult one for me. Homologation not possible and having to find a used or new section 3 complicates things further (and digs deeper in your pockets). Another limitation is the inability to appreciate the sound (Race vs Sport, Resonator vs. deletion) as it is difficult to compare to the original - no specific material on the web (lot's on other R170s) but not on 32AMG. One of those before/after youtube videos would certainly clarify it.

The Väth seems an easier solution for me. If it is homologated as their website says, the ideal option is to change the whole stock section 3 (deleting resonators) and installing the new Väth. If it is not, you could still do this but, as I would need to change it every two years, it would probably be easier to cut the stock near the muffler and just clamp the Väth muffler (going back to AMG every two years). The sound is a mistery here too, as there's nothing on the web relating to this specific model (32AMG). Deleting the resonators will probably do a lot and that's one of my worries too. Maybe this combined with the new muffler could go OTT - no idea really.

Any ideas, experiences, suggestions, any info at all would be excellent as I am starting to believe that I'm at a dead end here.

Salud
#19 Old 08-17-2009
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Before you give up, why not ask Eisenmann about any systems they've installed on cars in Spain? You might find that it's not been an issue for their owners / the TuV in Spain - it certainly doesn't seem to have been a problem elsewhere in Europe.
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#20 Old 08-18-2009
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Eisenmann

Hi OutEast, are you reading my mind? This is exactly what I have asked Eisenmann a couple of days ago (before I give up):

<<If the exhaust for this car is not homologated and there is no alternative but to install it via welding, what can I do? If I do install it as instructed, how do I pass the Spanish TüV every two years. What do your customers in Germany or in other European countries do about the compulsory national inspections?>>

Still waiting for an answer (difficult time of the year)...
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