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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Urgent - Engine Limp mode and surging after wastegate retrofit



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      07-21-2015, 11:10 PM   #1
mnetwork
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Exclamation Urgent - Engine Limp mode and surging after wastegate retrofit

I just performed the wastegate retrofit conversion using ISTA/P on my E90 335i. Now when I start the car it idle surges very badly and is reporting limp mode. The only thing I notice in the report is that there are warnings to "Reset of digital engine electronics adaption values and variant" and "Clear fault code memory". Other than that the report is OK. Do I need to clear adaption values or reset the ECU manually? If so, how do I go about this. The car won't drive past 1500 rpm like this!
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      07-22-2015, 12:13 AM   #2
mnetwork
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Resolved! Resetting throttle adaptions fixed this.
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      07-22-2015, 12:19 AM   #3
Miller335
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Way to stick with it!
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2007 E92 335 6MT w/335is clutch FBO MHD E60 Wedge map 49k miles
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      07-22-2015, 12:23 AM   #4
mnetwork
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Thumbs up

Quote:
Originally Posted by Miller335 View Post
Way to stick with it!
Thanks, that was very scary. The retrofit conversion took way longer than the estimated time (maybe because using ICOM emulator with the USB cable is slower), it didn't seem to be recognizing the car was off when it was telling me to shut off the car at the very end, and then that CEL/limp mode/erratic idle on the first start. Glad it was just that.
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