Car is not running right. Rough idle and misfiring under acceleration.

SG4247

Bought time for a leak down or compression test...

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NA on E85 - 12.402 @ 112 mph
100 shot E85 - 11.589 @ 117 mph
JWT C2 cams rev Base Circle & Titan Valves

Wilson2608

Yeah that’s what I’m concerned about ... it’s just weird because sometimes the car pulls strong all the way to redline and others it jerks and misfires the whole way. Motor has 120k miles on it. I contemplated doing a compression test while the plugs were out but I didn’t... guess I’m about to do that next. Fingers crossed

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Stillen G3, z1 Intake Manifold, Stillen Headers, Z1 HFC's, Stillen Catback. 330whp 267 ft- lbs tuned at Z1 motorsports.