So while at the track this weekend I had a number of issues, starting with my brand new clutch slipping. I'll have to resolve that with the shop, but as the weekend progressed, and the clutch slipped worse, I encountered a couple of misfires on Sunday and have the following codes... P0300, P0305, P0396. The car had "fresh" gas in it, but who knows how old the fuel was. It was 93 octane from a country store close to the track. I didn't have a single issue until this gas was put in the car and run. My question is could the constant slipping of the clutch have contributed to this and what, other than swapping the plugs, should I consider doing?

The clutch was the GT2 Sachs PP/GT3 disc/ and 964RS LWFW. The car simply was to powerful for it and I'd slip the clutch anywhere from 4500RPMs or .6-.7bar of boost on up... There were a few moments where it would "catch" when I let it cool, but most of the time it slipped...

Mike