Originally Posted by
Shrek
The old adage that "the Devil is in the details" definitely applies to Gen 5 conversions.
A couple of quick things to check ....
A potential component mismatch - is the calibration in the E92A ECM, the throttle body, and the accelerator pedal (APP) all for the same specific vehicle ? No to all of these. Brand new APP, TB came on the engine that came from a donor vehicle, ECM came from company I bought the swap kit from.
A potential power cycling issue - do the ECM and TCM shut down (power down) at the exact same time ? It happens while I'm driving and at no particular time. It will just happen randomly and cause the engine to go into limp.
If you did not wire all of the ECM and TCM ignition voltage feeds to the same switched circuit - then one of the modules may be still "on" after the other has powered down (i.e. is no longer on the CanBus network) - which may cause various issues to manifest.Harness came from the swap company and others seem to be running it just fine, but I don't know exactly how it's wired.