Originally Posted by Jason Drew
Originally Posted by Charles Lavoie
almost 18 counts of knock. Yowza.


Am I seeing the same log? I only saw 5.6* of knock.

Things are way off, you're not pulling 46 lbs/min on a 16g @ 4400 rpm.



Every degree retarded is 3 counts of knock.
5.6 degrees of timing being pulled is near 18 counts of knock.

I ran a 16g at 18psi on 550's no problem. Something is off with air flow metering causing the ECU to dump way too much fuel for actual air going in.

Bad MAF? Stock MAF? GM Maf? Intake Leak? (can a 16g free flow through a leak 46lb/min?)

Last edited by Charles Lavoie; June 07, 2016 09:02 pm UTC.
98,6Bolt,3"EXH,LINKV3,780cc,SD,SCM61@26PSI, 340LPH,AFPR,TSBOV,REARWB,FMIC,2"RAD(20/80/WW)