zrater

does all gm cars end up with 3-6 degrees kr, ive opened a few up and alot of them get 3- 6 kr a wot is this common. thanks

ringram

Only when not tuned properly, or with bad fuel, or iat temps..
No engine should show KR if it is its losing power and needs tuning. IMHO.

horist

no its not common... either real or false knock... (98s are more prone to false)

the supercharged V6 cars are much more sensitive, but ideally you still want 0* KR

on the V8 cars (at least LS1s) at WOT 4* is the max KR you can get I believe...