C32 AMG, C55 AMG (W203) 2001 - 2007

Dealer slowed down my car!!!

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Old Sep 22, 2004 | 08:27 AM
  #1  
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From: Sarasota
02 C32
Question Dealer slowed down my car!!!

I took my C32 in for the some of the usual stuff that seems to break (air conditions, clock spring in steering wheel, ESP flashing, sunroof not always closing) you know the usual stuff that breaks with 17,000 miles on a MB. The service tech said they "flashed" the ECU with some updates and now the car is noticably slower. I bought the car used with 12,000 miles and can't figure this out
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Old Sep 22, 2004 | 08:58 AM
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Debadged 6-Speed '05 C320 Sports Coupe
What does the dealership say about this?
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Old Sep 22, 2004 | 09:06 AM
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Nothing that they did would have any effect on the engine parameters?
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Old Sep 22, 2004 | 09:17 AM
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did you have your ECU upgraded? If they flashed it, they could have erased what was done to it.
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Old Sep 22, 2004 | 10:10 AM
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Originally Posted by x-tian-230k
did you have your ECU upgraded? If they flashed it, they could have erased what was done to it.
That's a good question. I just had a Renntech stage 1 done to my car. Can the dealer do anything to the ECU for normal service? I'd rather not tell them it was done.
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Old Sep 22, 2004 | 01:19 PM
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What consists of a "Renntech stage 1"? What was actually done to acheive the "Renntech stage 1" status. If an ECU reprogramming was done during this upgrade, I am afraid to tell u that all the ECU programming that was done is gone and they flashed it with the regular program.
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Old Sep 22, 2004 | 02:51 PM
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From: From Oxnard; living in Ocean View Hills, San Diego, CA
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Originally Posted by x-tian-230k
What consists of a "Renntech stage 1"? What was actually done to acheive the "Renntech stage 1" status. If an ECU reprogramming was done during this upgrade, I am afraid to tell u that all the ECU programming that was done is gone and they flashed it with the regular program.
...sounds like the ECU upgrade has been erased...info below was pulled from an old PDF on my h.d.

Renntech C32 AMG Stage 1 ECU Performance Upgrade** 1,995

Stock Horsepower: 349 @ 5700 RPM
Stock Torque: 332 lbs.-ft. @ 4,400 RPM

Code
54 203 00 94

BHP Gain: 25
374 @ 5700

TORQUE Gain: 20
352 @ 2700-5000
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Old Sep 22, 2004 | 03:25 PM
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The dealership sometimes will have bulletins on upgrades to the ECU that they do with out your consent. Its just one of those routine things they do that MB puts out. That why I didn't get my ECU upgrade because they can easily flash the ECU and you f*&cked!
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Old Sep 22, 2004 | 03:43 PM
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1959 220S / 1979 230 G / 2002 A210 AMG / 2003 C320 SC / 2004.5 C320 SS / 2005 ML350 SE / 2008 smart
however....

I also had my ECU upgraded by RENNTECH, but, they store my ECU software parameters for my car, they GUARANTEE that if the dealership flashes the ECU, the MB tuner shop will re-install the upgrade immediately and for FREE, for the life of the car.

I was told that up front before I decided to go ahead with the ECU upgrade. That is huge and can remedy this problem, if that's what indeed happened. Talk to whomever installed your ECU upgrade, and ask if they'll do the same thing. If it's done through RENNTECH they should stand behind their work.

Let me know what they say. Thanks !


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Old Sep 23, 2004 | 01:08 PM
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I had the same issue after taking my car in. Not only that but from a standing start the car now shifts out of first at 5500-5600 rpm. It used to shift at redline like it is supposed to. Dealer claims they can't find anything wrong and the car is performing as designed.
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