An update on this s2 zvh engine, i have pulled the head off and fitted a 1.5mm decomp plate to it, i have put it all back together and run it up. Took it for a spin and the pinking has stopped but if i advance the dizzy to much and increase the boost more than .7 of a bar i can get it to pink in 4th and 5th, so do you guys think this problem can be solved by a rolling road set up as i didnt think there is actually much you can play with on the s2 mfi set up, any info much appreciated