C219 CLS55 and CLS63, 2004-2010

Ecu Warning!!

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Old 08-16-2007, 12:22 AM
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Ecu Warning!!

As some of you know I have the Renntech Headers & Ecu upgrade. O.K here is the WARNING!. Well, the problem starts with doing the KEY reset. My car was running at 100% kick azz mode, shifting at 7300 rpm, fast fast fast through out the whole power band. Never felt it better So as we do from time to time, we do the key reset to get back that factory response. Looks like my ecu is pissed off shifting at 6500 cutting out at 6500 just running like crap. I am hoping that it will remap after some miles. When I first did the Renntech Ecu upgrade the car did the same then came to life after a day of driving. I will update. SO DO NOT DO THE KEY RESET if you have a ecu upgrade. any input would be great
Old 08-16-2007, 12:23 PM
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2007 CLS63 030
Originally Posted by rarfinancial
As some of you know I have the Renntech Headers & Ecu upgrade. O.K here is the WARNING!. Well, the problem starts with doing the KEY reset. My car was running at 100% kick azz mode, shifting at 7300 rpm, fast fast fast through out the whole power band. Never felt it better So as we do from time to time, we do the key reset to get back that factory response. Looks like my ecu is pissed off shifting at 6500 cutting out at 6500 just running like crap. I am hoping that it will remap after some miles. When I first did the Renntech Ecu upgrade the car did the same then came to life after a day of driving. I will update. SO DO NOT DO THE KEY RESET if you have a ecu upgrade. any input would be great
Do you have to re-map the ECU now?
Or will the car re-learn?

Take that car to a track once back to normal!

good luck
Old 08-16-2007, 03:43 PM
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how would u do the key rest? have you called renntech and asked them?
Old 08-16-2007, 04:13 PM
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The warning is just that, DO NOT DO A KEY RESET! I hope it will remap by it's self . I will take a long drive tonight after work and run it hard. Have email to renntech, waiting for response
Old 08-17-2007, 12:25 AM
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06 CLS55 w/ P030, 05 Jag S Type R, 05 TBird-68 Dodge Charger R/T-440 w/4speed I'm original owner
Originally Posted by rarfinancial
The warning is just that, DO NOT DO A KEY RESET! I hope it will remap by it's self . I will take a long drive tonight after work and run it hard. Have email to renntech, waiting for response
Who did your rentech upgrade and how much?
Old 08-17-2007, 01:14 AM
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Give james at Creative Auto Works a call. He will get the job done right You can find him here on the forum. Its 10pm so the long drive will have to wait till Friday but I think we are getting back the POWER! We shall see in the morning 7300 rpm here we come
Old 08-17-2007, 01:45 AM
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will update you all on Renntechs reply Waiting on MR. BOB

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