Pretty mild, 11:1. Ngk 55 I believe, but I will have to check. They were recommended by Lloyd Elliot when I did the swap.
Anything else that could be causing it? Too much fuel? I have not tuned it with a wide band, but that's my next step. I also cleaned my MAF, checked fuel pressure, checked for exhaust leaks again. Only thing I can think of is the collectors for my headers are leaking, but I have tried every material of gasket to stop the leak, and have taken them off and tightened the multiple times. It's not that bad, but who knows. My fear is desensitizing the sensor, and having real knock. The best I have in town is 91 octane unless I want to pay $10 a gallon for race gas. Which I definitely do not want to do

