N4PWJ

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well, ok Gero, maybe not light, but they aren't as heavy as other 19x10 rims. they also do withstand a pounding from potholes. chose my rims not for weight, but for design, as i thought they suited the car the most and filled the arches perfectly.

-1-

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Best reason I can think of for a passenger vehicle.

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--------SLK 55 ///AMG---------
THE MON55TER ON THE BLOCK

DansSlk

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Well if people spec the 030 / P98 pack it's more profit for MB so i would imagine the discussion was over in seconds.

Just like the Black Series its all just BS the car does not even have a fixed roof it simply has the standard 55 roof (in CF ) and its latched onto the windscreen frame and inside the trunk using the exact same clamps the only difference is the hydraulic system has been removed and the clamps locked.

The point is if any company wants to make a sale they need to find as many goodies as possible to attract buyers and saying here we have a SLK55 with the AMG Performance Package fitted / here we have a SLK55 Black is more enticing to buyers than simply SLK55, MB don't give a crap about performance or weight they care about profit only now you would not buy a car with a performance pack just because it has a higher limiter but throw in some wheels and it makes more sense to purchase it on top of the standard car.

If MB was really serious about performance then they would have gone BMW M3 CSL style reducing weight so much that the floor of the trunk is cardboard but they're not.

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fastnfurious

Contacted Funktion Auto- a tuning shop in VA.
http://www.funktionauto.com/index.asp

They quoted me:
1) $1,495.00 for a Kleeman ECU upgrade.
2) $265.00 each for 17" OZ Ultraleggera wheels (16.7 lbs each).

The rep at Funktion Auto was informed by Kleeman that an ECU upgrade would be "invisible" to a dealer with regards to service and warranty. They wouldn't have any way of knowing that the ECU was changed. Is that correct?

Do these two mods seem like a good bang for the buck? Considering that my car is only two months old, do you all think its too soon for mods?

DansSlk

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Go for the wheels forget the ECU without something like headers or forced induction its a waste of your money.

It WILL be detected by the dealer as soon as the car is connected to the SDS the software is verified and if its been modified it is immediately flashed with stock software and your engine, transmission and if the dealer wanted even electrical system warranties are null and void. This is why people with cars that have been modded are open about it they take the warranty hit because most big name tuners offer warranties as good as OEM to them to replace whats lost from MB this also allows the owners to say keep away from XYZ control units they are not standard.

Never trust a salesman mate, wheels on the other hand great buy will give a noticeable difference in performance.

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jliu

WILL be detected immediately the dealer hooks your car up to the SDS. Not to mention you will want to tell the SA not to reflash your TCU or ECU. WHY? cuz you have a ECU flash.

Don't believe that crap the salesman was spouting.

jliu

I'm thinking of getting a set of OZ rears for Drag radials.

Cant beat CHEAP, STRONG, and LIGHT.

jliu

The BS weight was brought up in the US AMG Forum. AMG's response was that it was for looks and that FUTURE 030 packages will take weight into consideration.

Yeah right.

jliu

Carlsson makes two types ... regular and UL. The UL's are extremely light.

19x9 are 20 lbs.
19x10 are 21 lbs.

I can attest to the strength of the rims. I hit a huge wooden pallet on the Highway at over 65 mph. Tire was ripped to shreds (Michelin Pilot Sport) and I got a slight bend inside of the carlsson UL. Thats IMPRESSIVE.

alroumi

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Good pointers mate's,Though I would like to say is for fastfurious is to get the Mercedes-Benz Sports Airbox that come on the Euro 350's It has a larger airflow volume and when coupled with the Green Filters and an Ecu, muffler might due the track.

Honestly, after the Ecu and Filters I felt the difference on my 55. So I assume with the modifications I mentioned above I am pretty sure our fellow member would notice it.

To sum it up, I would suggest you to go for the MB Sports Airbox plus the Green Filters, Kleemann Ecu , Mufflers any after market one's such example SuperSprint, Peicha and so on.

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06 Kleemann Designo Mocha Black SLK55 AMG
06 Porsche Cayenne S
07 Jaguar XKR Coupe'

I use the Torque and keep the HP for my Steak Sauce!

ppower

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Actually MB does care about performance and weight, you just have to buy the SLK Black version.

I have to question the longevity (of the engine) of putting a supercharger on the SLK55 without replacing the pistons with lower compression ones. The car has 11.0:1 compression which is not boost friendly. You'll notice the SL55 has a compression of 9.0:1, which is much more boost friendly.

Does anyone know when you buy a Kleeman SC do they replace the pistons with lower compression ones?

Question for DansSLK how much HP does your Brabus 6.1l make?
(oh, looked it up makes 445hp)...

Pp

DansSlk

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I hate to disagree but having worked on black series cars the only reduction in weight is from the front and rear bumpers and the roof.

The roof frame is still standard 55 with normal locking units holding it in place they simply have a pin locking them closed so the roof is not a structural component on the black series car.

As for performance frankly they have put no effort into it the level of power they have boosted it to is something the engine was capable of way back when it was designed they have simply made some token changes to the engine auxiliaries (notice i did not say engine there) to produce the extra power.

The Kleeman SC does not run at the same boost level as the OEM MB unit on the M113SC versions so the pistons are not changed in any way neither are any of the other engine components, i don't think at the boost levels involved the engine is in any danger but to add more boost i think it would be necessary to work on the internals to prevent a nasty mess.

The rabus produces way more power than 445 that is the quoted figure for the increased displacement mod alone my car has had considerably more done to it than just that and its pushing out more to the tune of high 500's.

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jliu

My understanding was the BS had a few more things that reduced weight. Seats, Door panels, wider fenders. The benefit of the CF on the roof is the lower center of gravity for the car by reducing the weight at the top height of the car. While I understand that removal of all the hardtop motors reduces weight I'm not sure it was a good thing. The F/R weight percentages must get even worse.

There are other small things like a difference TCU program for the tranny.

As to boost on the 5.5NA motor ... all of these boost kits for stock motors are running less than 7lbs boost. Thats why the modified 5.5 FI motors can make so much more HP. THey are running at MUCH higher boost lvls.

Regarding Dan's engine ... your looking at brabus specs for just the displacement increase. Dollar for dollar the supercharger kit from Kleemann and Renntech are cheaper per hp than the displacement increase.

Heh my wallets weren't as deep as Dan's and also Brabus never told me about the 6.1 S ... DUH.

BTW Dan,

Anyway you could send me the TCU program from a blackseries SLK55?

DansSlk

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The thing with the Black is most of the changes are cosmetic behind the door cards all of the electrical gear is still installed, those seats are heavier than they look and still carry a lot of weight granted not as much as stock but still and you have things like insulation and all the carpet if they where really serious the black series cars would be like CSL's they really did take the M3 apart and put it back together again and i have to hand it to M thats a real achievement.

I have not forgotten about the TCU stuff mate honest i am just finding it hard to lay my hands on it MB are still being very tight about it all, i have found the push button with S M1 and M2 on the EPC now so its starting to show slowly

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-1-

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Only if you haven't left the dealer lot. Once you get it home, anything goes. And for some things, the sooner it goes, the better.

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--------SLK 55 ///AMG---------
THE MON55TER ON THE BLOCK

ppower

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So the Kleeman SC cars I have seen with almost 600hp don't have stock pistons? 230hp+ is a lot for less than 7lbs of boost.

alroumi

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Stock pistons, they just add the S/C unit, cam's ,headers, high flow cats and an ecu update.

Just think of it this way if they had non oem pistons the boost would be higher and could reach 650hp rather than 4hp short of 600.

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06 Kleemann Designo Mocha Black SLK55 AMG
06 Porsche Cayenne S
07 Jaguar XKR Coupe'

I use the Torque and keep the HP for my Steak Sauce!

jliu

should be taken with a grain of salt.

ppower

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Well the Renntech one makes like 490hp? That seems more reasonable. I can't see a 230hp gain with sub 7lbs of boost. Not to mention running that much more hp on stock pistons. What kind of pistons does mercedes use? Are they forged? I suspect the ones in the SL55 are forged on top of being lower compression ones. Because if they are Hypereutectic pistons in the SLK55 they won't last under boost. Manufacturers use those now for emission reasons vs forged in many applications. I had a set in the first short block I had for mustang and they lasted about 8,000 miles before one ended up with a hole in it, this running 8-9lbs of boost. I now run a racing block and forged pistons...

Is the engine in the SLR the basically same one as the SLK55? Except for blower and dry-sump(and probably pistons)? So I guess it's possible the kleeman makes almost 600hp.

Shame nobody sells a higher rear gear for the slk, dump the 3.06 and get like a 3.55 it would help a lot. Of course MPG would suffer slightly.

Pp

DansSlk

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All the 55 series car's SC/NA are based on the same 113 block the SLR engine is the 115 series unit however that is basically a carbon copy of the 113 with a different SC its assembly is considerably different but its construction is basically the same as whats under your hood.

Forged pistons in the 113, gotta remember this is a very old engine and not only is it built like a brick sh1thouse but its battle hardened it can handle the boost pressures no problem whatsoever i can assure you in fact i will have to check but i have a funny feeling the pistons are the same PN for the whole series.

For the gearbox you can have the parts you want custom made if your really serious.

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