[RamAir02]

Had a DE event at Watkins Glen this past weekend. The car started throwing a P0300 code on Sunday and was breaking up at high RPMs -- flashing CEL, misfiring.

I cleared the code and went back out on track, same issue. I disconnected the battery for 10 mins and went back out on track, same issue.

The car drives fine at low RPMs, but starts breaking up above 4500-5000 RPMs. I took the car to the dealer since she's still under powertrain warranty. They said they detected 115 misfires on cylinder 2. If the issue is indeed on cylinder 2, I'm not sure why the code wouldn't throw a more specific code to indicate the cylinder, i.e. P0302, instead of a generic random / multiple misfire code, P0300.

The tech replaced the spark plug and said that the old one looked ok, but the gap was a bit big. I've never touched the plugs -- they're factory. They also swapped cylinder 2 coil pack with cylinder 4 in case that's the issue.

I wish they were able to further diagnose the issue. I have a feeling I'm going to run into the same issue at my next track event which will ruin the weekend.

Has anyone seen this issue before? Car is mostly stock (mods in sig). I thought it might be a sticking injector or something fuel related, but it doesn't seem they did anything to diagnose the fuel system.