Thread: reading kr

your stock and n/a its gonna knock and its ok. if you can tune it out you'll get more power out of it tho.

Originally Posted by luckyg817

Sorry for sort of semi bringing this thread back to life but I just had a quick question. On my 04 NA I am looking at around 5-6* of KR. I see that KR on cars that are stock is normal but was just wondering how much KR is fine until you should be concerned? And also would NA and supercharged have a different range as far as how much KR is normal for each?

It's an NA motor so you're fine. More boost than stock + KR = bad. But you don't have that problem. I wouldn't worry about it unless you're planning on modding or doing something special to it. Even stock 3800SC cars knock. I saw 4-5+* of KR stock. No biggie.

Also if you're worried about it, and you don't already, Put in some 93 instead of 87.

When do you see KR? When I was NA I was seeing 5-6 when shifting. Simply adding a 3" FWI, I rarely seen spikes like that again. Maybe coincidence, dunno because I didn't run NA long. But a downpipe and cai or hai will definitely help you.

And ideally you don't want any KR when FI. You can get away with a few degrees, but it seems these pistons are easy to chip so ideally you should tune it all out if possible.