Quote:
Originally Posted by MARKSTI
As title says
Two days at the track..first time I pushed the car a little in a TT class revving to redline and the check lamp comes on..starts flashing
Code po300 and po306 come up for misfire.
Reset it....went out for a 5/10ths lap and the felt like crap...but no lamp or code.
Reset the ECM...unhooked the battery ..and parked the car for the day.
On the way home mil came up again ....it ain't a bad injector or bum coil..engine internal..ran some testing at my shop to confirm this...don't care to get into it further.
Btw my background is 15 years in road racing with a comp license, racing many different fast cars..I'm easy on the equipment...no money shifts here that broke the motor...
Moral of the story don't flash your ecm and void your motor warranty with the ls7
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Sorry to hear about your engine. What kind of ecm flash did you have?