Join Date: Nov 2009
Location: Oceanside/Temecula CA
Vehicle: 2005 SLK55 Iridium Silver
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The Wave Trak LSD differential was installed by Oceanside driveline. They had to do a little bit of grinding inside the differential housing for clearance as the wave track differential is a little larger than the stock open diff. Quaife manufactures two that fit the SLK 55 R171. One of them is a drop in unit with no modification , the other one notates some "Modification required". The nice thing about this upgrade is that it doesn't require any modification to the ECU that controls the car. After a couple of months of experimenting , I have noticed the traction control program actually works better. It's still there in the background however and I rarely turn it off. I have found that with experience and little bit of thoughtful pedal modulation on the excelerator , it will generate a little "chirp" from the rear tires, both rear tires at the same time, but the wheels lock up quickly with no flashing yellow light indicating the traction control program is coming on. If I stand on it with WOT from a standing start the traction control kicks in and kills the fuel delivery along with a little bit of rear breaking. That is a little disappointing , however it is performing the way it supposed to. If I really want to get on it from a standing start I just turn off the ESP and light them up. You get a little bit a wheel spin but it locks up quickly and away I go . This is by far the greatest car I have ever owned and now it's even better. It feels different... better.
Next I think I'm going to go for some headers, and airbox and an ECU reprogram. I've decided that I want to keep it a naturally aspirated engine. I love the sound of it with the stock resonator and the stock AMG mufflers. It's pretty quiet until you hit the gas and then it just sounds really great, not too loud but loud enough. I've had many people say how great this car sounds. It's just a great all-around car. Because I live in Southern California the top is almost always down and I run it in S mode all the time. After playing around with the manual shift option I have come to the conclusion that it's best just to leave it in drive and let it do the shifting. Honestly I think the car trained me. :-) I am a former owner of a 2002 SLK 320 and I mistakenly sold that car and was sorry for it but now I have this little bad ass 55. Every penny I spend on this car is worth it.