Quote:
Originally Posted by JPSlick
I do all things with the car off, only basis I have is on my last car, If I modified an ECU change while the car is on (specifically while "tuning"), the car would stumble and burp for a little bit. This was probably because during the upload process the ECU would restart. Depends on the car, but the safest route is always when off, just avoids some potential head aches.
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I wonder though what the process should be.
Bavarian Technic doesn't say.