Crap. I'm in the boat too. Wednesday on the track session I've got the P0351. No particular sound on start up or anything. Cleared it. Yesteday on my way to home I've floor it 3 to 4 WOT. Got it again...
Mods: Perrin EcuTek Flash - aFe Intake - Nameless Fontpipe/Axle back.
I hope the seals are ok
