[sjf911]

I am running the same compression of 9.5:1 JE with 3.2 heads (twin plugged) and intake but GSF headers. I have run only 0.5 bar with both an intercooler and methanol injection. I would be very interested in knowing if anyone has an ignition map of yours or similar conversion at these higher boost levels. I also wonder how the JE pison design with deep valve pockets effects detonation risk compared to the stock 3.2 pistons of the same compression.