knock at part throttle

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Marc87GN

New Member
Joined
Apr 12, 2004
Messages
1,186
I'm noticing when I watch the Turbolink recordings, I'm getting sometimes 12 degrees of retard at part throttle on the highway. At full throttle, I'm getting 0 - 3.5 with the MAT at 100+ degrees. I'm running 93 octane and about 15 psi> I have a large exhaust leak at the turbine house. Could this be causing the turbo to spool faster than the fuel curve?

I will start working on that side tonight. At full throttle, I get very little knock 0 - 5 degrees with O2s @ 850mv, but at part throttle on the highway when picking up speed, I get knock at all different rpms and mph.
 
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