Finally onstalled my PFC last night and had a question what is a normal knock reading? The peak shown on the commander is 125.

 

Anywhere under 60 reading is what Apexi booklet recommends, and usually our friend's car doesn't run more than 20ish once properly tuned.

Timmy

 

Just got mine and it needs tuning but my knock is running around 100 almost all the time except idle and starting off the line yet my engine is super rich.

I'm not giving it much credibility right now but there could be a reason why.

 

The most i have ever got is 40 under a full boost run.