Going Renntech for the following reasons
https://mbworld.org/forums/showthrea...hlight=headers
1) Install can be done by a dealer - I am having my install done by a dealer in NY. Check out Renntech's website. A lot of their dealer locations are actually Mercedes Benz dealers. I am taking my car in for the 1,000 mile free service and while that is getting done I can get my Renntech installed. They are even going to give me a loner car. Possibly a Renntech MB.
2) Doesn't void the warranty - A Mercedes Benz dealer can do the install that will standby the warranty. What more could you ask for.
3)Renntech is extremely helpful. - I spent at least an hour talking to George Leca at Renntech. He explained all the parts and packages that Renntech offers for my car. Very helpful and insightful.
4)Renntech ECU & Pulley could be faster than Kleemann ECU and pulley. Check out SGC's E55 without headers. I will admit Kleemann headers look awesome, but they remove the cats and the 02 sensors. With Renntech you keep your 02 sensors and primary cats. In addition they are bolt-ons, so there is no welding.....
I am getting my car done on Saturday, and I will definitely let the group know what I think of the Renntech upgrade. If I am heading down the wrong path, or my analysis is wrong, SOMEONE PLEASE TELL ME.....
Last edited by SleeperX; Jan 30, 2006 at 08:14 PM.
Thanks
Let us know it works out.
Glad you came to a decision. I thought you were going to explode the last couple of days. You were obviously anxious, and this decision weighed heavy on your mind. I know................... I went through the same thing.
You know what? I like Renntech too. I purchased their rear spoiler.
One final suggestion, show us some track numbers. Dynos are fine but they are not a true measure of "street" performance gains.
Last edited by Rock; Jan 30, 2006 at 09:18 PM.
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https://mbworld.org/forums/showthrea...hlight=headers
1) Install can be done by a dealer - I am having my install done by a dealer in NY. Check out Renntech's website. A lot of their dealer locations are actually Mercedes Benz dealers. I am taking my car in for the 1,000 mile free service and while that is getting done I can get my Renntech installed. They are even going to give me a loner car. Possibly a Renntech MB.
2) Doesn't void the warranty - A Mercedes Benz dealer can do the install that will standby the warranty. What more could you ask for.
3)Renntech is extremely helpful. - I spent at least an hour talking to George Leca at Renntech. He explained all the parts and packages that Renntech offers for my car. Very helpful and insightful.
4)Renntech ECU & Pulley could be faster than Kleemann ECU and pulley. Check out SGC's E55 without headers. I will admit Kleemann headers look awesome, but they remove the cats and the 02 sensors. With Renntech you keep your 02 sensors and primary cats. In addition they are bolt-ons, so there is no welding.....
I am getting my car done on Saturday, and I will definitely let the group know what I think of the Renntech upgrade. If I am heading down the wrong path, or my analysis is wrong, SOMEONE PLEASE TELL ME.....
If the MB dealer is a authorized Renntech or Kleemann dealer you should not have any issues
Enjoy your transformed BEAST
Thanks
Renntech performance package 3 is $9,695 on their website. Website says it will give you a 75 horsepower gain and an 80Ib-ft. torque gain..
Glad you came to a decision. I thought you were going to explode the last couple of days. You were obviously anxious, and this decision weighed heavy on your mind. I know................... I went through the same thing.
You know what? I like Renntech too. I purchased their rear spoiler.
One final suggestion, show us some track numbers. Dynos are fine but they are not a true measure of "street" performance gains.
Enjoy your transformed BEAST

In most cases you are correct. However, if the failure is major, such as a blown engine, you'll be dealing with a regional Mercedes rep and it won't be the dealers call.
I modify everything that I own so I say go for it! However, be aware that there are risks. Renntech is a very reputable company and the odds are that you won't have any issues. Good luck and have fun!
Enjoy your transformed BEAST

By any chance where you there last Friday night discussing the mods? I was picking up my car from service and overheard a salesman talking about adding Renntech mods.
I do believe that they can adjust the timing and fuel curve through STAR DIAG, but I dont think they have a dyno for HP. I could be wrong about the STAR DIAG though.
Good luck with the mods, you picked a great dealership. BTW: very jealous of all you E55 owners! By far my favorite sedan.
By any chance where you there last Friday night discussing the mods? I was picking up my car from service and overheard a salesman talking about adding Renntech mods.
I do believe that they can adjust the timing and fuel curve through STAR DIAG, but I dont think they have a dyno for HP. I could be wrong about the STAR DIAG though.
Good luck with the mods, you picked a great dealership. BTW: very jealous of all you E55 owners! By far my favorite sedan.









