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| Performance MODS for the R171 How to make your SLK perform better |
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| | #81 (permalink) |
| Founding Member #2 / Ambassador Of Good Will ![]() Join Date: Jun 2006 Location: Orange County, CA
Vehicle: 2008 SLK 55
Posts: 4,910
Country: Thanks: 313
Thanked 206 Times in 106 Posts
| WELCOME ICEBORNE!
__________________ Eddy To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts. Pewter/Beige, PIII package, Airscarf, Hands-Free Communication System, Lighting package Designo Black Leather Cover on e-brake handle, ( To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts. Bill T), SmartTop v1.0, Kleyman 3BFM (NoRegret Custom), Green Air Filters, Mod. R170 ant. EuroClear sidemarkers w/PIAA PlasmaIon lamps, chromed front & rear turn indicator lamps, PIAA SuperPlasmaGTX front parking lamps, HyperWhite license plate lamps ( To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts. Scott), bilateral rear fog lamps enabled. |
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| | #82 (permalink) | |
| SLK World Member Join Date: Dec 2007 Location: NorthEast, US
Vehicle: 2007 SLK350 6M with AMG pkg
Posts: 42
Country: Thanks: 0
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| Quote:
![]() Ynot, do you have a secret technique of removing the front cover of your 350 ? How come you never mentioned breaking yours. I remember you recommended just pulling up the cover and you said it won't break anything ? or was that just the back cover? | |
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| | #83 (permalink) | |
| Founding Member ![]() Join Date: Jun 2006 Location: Colorado
Vehicle: 06' MBZ SLK
Posts: 2,700
Country: Thanks: 93
Thanked 25 Times in 18 Posts
| Quote:
__________________ 06' SLK 350, Iridium/Ash all pkgs. 6-spd, 19" DCR. To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts. To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts. To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts. To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts. | |
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| | #84 (permalink) |
| Elite SLK World Member ![]() Join Date: Feb 2008 Location: Yukon, OK
Vehicle: '07 SLK 280; '04 C 320, '01 Honda S 2000, '98 Ford Ranger truck.
Posts: 409
Country: Thanks: 33
Thanked 60 Times in 37 Posts
| Well, I just installed the "Greens" in our SLK 280 in less time than it took to read this thread. And I'm NOT a mechanic -- oh no! I'm the only guy I know who ever fouled up an oil change! In any event, here's a tip or two. In removing the front plastic cover, unsnap it from the outboard connection points with the rear plastic cover by bending the front cover up gently at the rear outer edges. Then just lift up. The hoses disconnect by just pulling off. No clamps. Then, remove the clip that holds the back of the rear plastic cover on, and just pull the rear cover upward. After you've removed the rear cover (which has the air boxes underneath) place this cover upside down on a towel or blanket to avoid scratching. After unscrewing the air box screws to get to the filter, spray a bit of WD 40 on the threads. They go back in much easier. When it's time to snap the rear cover back on, locate those round rubber bits that the clips attach to, and rub a bit of paste wax on them. The back cover will snap back on much easier that way. Just push the hoses back on. Clip the two middle clips of the front cover on, then snap the outboard clips. Then you are done. My car has less than 2K on the odo, and already the air boxes were dirty. They are going to need cleaning every few months, I fear. Thanks to all for the advice. Haven't driven enough to get the ECU reset, but I can tell that the engine is quieter. |
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| | #85 (permalink) |
| Don ![]() Join Date: Jun 2006 Location: Virginia USA
Vehicle: SLK 55 ///AMG The MON55TER on the block
Posts: 2,167
Country: Thanks: 49
Thanked 43 Times in 31 Posts
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__________________ To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts. -----------------1----------------- ---------SLK 55 ///AMG--------- TOP D0WN-URGE 2 DRIVE GOES UP |
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| | #86 (permalink) |
| Elite SLK World Member ![]() Join Date: Feb 2008 Location: Yukon, OK
Vehicle: '07 SLK 280; '04 C 320, '01 Honda S 2000, '98 Ford Ranger truck.
Posts: 409
Country: Thanks: 33
Thanked 60 Times in 37 Posts
| -1-; It is a bit of an awkward procedure, but not one in which any clips need be broken. I don't know about you, but I always have a bit of a problem in "forcing" plastic bits, because you never know if you are "forcing" them correctly, or at what point they will break. I noted that my "Greens" said they were for C 320s too, and I've got one that's 4 1/2 years old with no air filter change. If it is as dirty in the air box there as I suspect after seeing the ones on the 3 month old SLK, I need to change those and clean the boxes too. I figured out how to get the front part of the plastic cover off, and the "air tubes" too, but haven't figured out how to get the rear part of the plastic cover off. Well, life is fun, isn't it? |
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| | #87 (permalink) |
| SLK World Member Join Date: Dec 2007 Location: NorthEast, US
Vehicle: 2007 SLK350 6M with AMG pkg
Posts: 42
Country: Thanks: 0
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| Did not change to the Greens yet but I just tried to remove those 2 covers today. Yeah, you just have to do it once to realize it will be really easy the 2nd time. The only thing you need to watch for is those 2 small clips on each side in the back of the front cover because you don't want to pull straight up on those clips. I did slowly pull straight up the first time, and luckily it came off fine. I think when those plastic get old, it will become more fragile, so it's good to try it when it's new . Now I know how to position it when pulling up ![]() |
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| | #88 (permalink) |
| SLK World Member Join Date: Feb 2008 Location: Texas
Vehicle: 2008 slk 350 Mars Red
Posts: 33
Country: Thanks: 0
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| installed green filters today. i think taking off the 2 front hoses are the hardest, everthing else just comes right off. i notice that on the 350, there is an additional hose that connects in the middle with arrows. anyone know what it is? btw, in reading through these tutorial, no one has mentioned about disconnecting this small tube before lifting the back cover and connecting them back when done with the install |
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| | #89 (permalink) | |
| Founding Member #2 / Ambassador Of Good Will ![]() Join Date: Jun 2006 Location: Orange County, CA
Vehicle: 2008 SLK 55
Posts: 4,910
Country: Thanks: 313
Thanked 206 Times in 106 Posts
| Quote:
"After removing the front piece and before removing the back piece (that contains the air filters), remove what looks like a vacuum hose at the front of the back piece first, then remove the back part." It may not be in the tutorial as it is for the 55. IIRC, Ynot may have posted about the hose, it may be at a another forum.
__________________ Eddy To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts. Pewter/Beige, PIII package, Airscarf, Hands-Free Communication System, Lighting package Designo Black Leather Cover on e-brake handle, ( To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts. Bill T), SmartTop v1.0, Kleyman 3BFM (NoRegret Custom), Green Air Filters, Mod. R170 ant. EuroClear sidemarkers w/PIAA PlasmaIon lamps, chromed front & rear turn indicator lamps, PIAA SuperPlasmaGTX front parking lamps, HyperWhite license plate lamps ( To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts. Scott), bilateral rear fog lamps enabled. | |
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| | #90 (permalink) |
| Founding Member ![]() Join Date: Jun 2006 Location: Colorado
Vehicle: 06' MBZ SLK
Posts: 2,700
Country: Thanks: 93
Thanked 25 Times in 18 Posts
| I thought so too, two hose to be exact but don't recall if it's in this thread or not, too lazy to go back.
__________________ 06' SLK 350, Iridium/Ash all pkgs. 6-spd, 19" DCR. To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts. To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts. To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts. To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts. |
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| | #92 (permalink) |
| Super Moderator Join Date: Jun 2006 Location: Wales
Vehicle: 05 B55S (Brabus 6.1 S)
Posts: 6,458
Country: Thanks: 84
Thanked 137 Times in 107 Posts
| The hose that's on the 350 and 280 is the part load crankcase ventilation line, its hardwired on the 55 so the hose does not exist hence it not being the 55 tutorials. KTown, You'd be very lucky mate because speaking as a dealer myself you open yourself upto a whole load of crap from both MB and the customer if something goes wrong. Say a filter failed for example and damaged the engine, MB would look at it and say tough so then the customer turns to the dealer and blames them because they fitted it. You might be able to convince one to do it if you get some sort of waiver that removes any responsibility from the dealer. But for the case of 8 screws i would just DIY.
__________________ One thing you will learn with German cars - If it's simple it ain't happening. |
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| | #94 (permalink) |
| Super Moderator Join Date: Jun 2006 Location: Wales
Vehicle: 05 B55S (Brabus 6.1 S)
Posts: 6,458
Country: Thanks: 84
Thanked 137 Times in 107 Posts
| It really is as simple as it looks in the tutorial.
__________________ One thing you will learn with German cars - If it's simple it ain't happening. |
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| | #95 (permalink) |
| Senior SLK World Member ![]() Join Date: Nov 2007 Location: Toronto, Canada
Vehicle: 06 SLK55
Posts: 154
Country: Thanks: 21
Thanked 20 Times in 11 Posts
| Just installed the green filters over the weekend. As many had mentioned in this thread, it is pretty simple , even for me who have never done any work harder than this one. Here are few pictures which were taken during the work. I hope it will be useful to those who like to have visual of the procedure. Engine bay with the front plastic cover already removed and the back cover is loosed. There is still a zip tie attaching a hose with the back over which need to be cut. ![]() As shown below, it is a black zip tie attach the back cover to a hose ![]() Engine bay without the covers/airbox, it is pretty amazing to see that a big heart is fitted into a rather small car! ![]() few screws later, you have the airbox removed, lots of crap in it!!! ![]() same goes with the other side! ![]() reverse the order and put everything back into the car, as well as new zip tie (in white) ![]() Done in 30 minutes, time to enjoy the new green filter. I also gave it a quick wash to the car at 3 degree C, that was cold! ![]() The engine is definitely more lively and the car has better response to the throttle. Smart module is on it's way and will be the next item to put in, just in time for the summer!! ![]() |
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| | #96 (permalink) |
| Senior SLK World Member Join Date: May 2008 Location: Seattle, WA
Vehicle: 2005 SLK-350, Black on two-tone biege/black
Posts: 111
Country: Thanks: 0
Thanked 27 Times in 15 Posts
| I just installed the Green filters yesterday. It was extremely simple. With the 2005 SLK350, you do NOT need to remove the coolant hose that attaches to the passenger-side (on USA/LHD vehicles) air intake. Just leave it attached, and detach the air intake hose from the air intake box (on the rear engine cover). I detached the hose by pulling it off the air intake box on the rear engine cover, rather than the end of the hose toward the nose of the vehicle. And yeah, the whole thing takes about 10 minutes. The hardest part for me was getting the rear engine cover back on properly. I just had to fiddle with it for a bit, but it's pretty simple. I also had quite a bit of build-up in my intake. There were whole bees packed in with leaves and dirt, pine needles, etc. It was like a pancake of crap shoved in my intake. I shop-vacced it all out, and replaced the filters. Oh, and the fact that my car swallows bees whole really gave me a laugh for sure. I think I might name her "Medusa." I have definitely noticed an improvement in performance. The car revs freely and much more quickly now, I probably gained 0.3 secs on a 0-60 run. I mean, I can seriously scream through the first 3 gears in about 2-3 seconds flat (and I have a manual). Haven't driven it long enough to check gas mileage, but I do notice an improvement on the cluster. My last tank averaged 18.5mpg in mixed driving (I like to play sometimes). Will update with new mileage when I have it. |
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