I am fighting a problem of 6 degrees knock only when I shift. I have tried changing what i thought would cancel the burst knock with tunercat, but it is still there. From what I understand, burst knock retard is preemptive upon seeing a large change in air flow at the maf sensor. Could an aftermarket Granatelli maf sensor be causing my problem? Any ideas are appreciated. Thanks

 

its not cause by your maf its caused by your map sensor. there is a table for this it like the 5th or 6th one down the list. it "knock retard VS map" just zero that table out.