The IMRC sounds like the culprit, but if that doesn't fix it look at the wires and plugs. I had issues above 4000rpm on two seperate occasions on the same engine. First time it was the crappy plugs, the second time it was the crappy wires. I did a tune up before knowing any better, but now the cars get only OEM equivalent plugs and wires.


Beer is my Gatorade. Hooray Beer. '98 "Sport" Pacific Green '98 E0 SVT Silver Frost Pictures