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hi I have an ls1 vy turbo while trying to get a base line the timing drops away and comes back like knock retard but there isn't any I'm missing something and cant see it any help appreciated I locked in third gear and just put some revs into it and you can see where it drops and under acc it goes 0 Attachment 85625Attachment 85626Attachment 85627
turn off burst knock
That’s exactly what it was Luke I scanned all the timing and it was pulling 7 degrees burst knock and a couple from iat as well
do you have a WOT log? is this dead head or return style fuel system?
there is many things in your file I would STRONGLY advise changing... for a turbo combo
NO wot as only just starting with it after converting to 2 bar sd and was populating the ve