knock issues

[speedjunkie]

Originally Posted by Brent

yes, hitting the right arrow records the peak number. I always keep my setting on the 4 monitor screen so I can see real time and peak.... plus if it's in 8, it's too small for me to easily read while going down the road.

Haven't people seen chatter from running extremely rich?

Ok I'll try that.

Define chatter, haha. For the record, I'm not crazy about running rich, but I would consider that better than running lean haha.

Originally Posted by SPICcnmFD

I did have high knock running extremely rich, it seems to stay about the same after 10:1 or so up until whatever you tune it for.

If it does the exact same thing every pull even though you are changing the afr's and timing I don't see why that wouldn't be enough to prove it isn't knock. I know I worried because my new engine read a good bit higher than the old engine, but it reads the same every pull at pretty much any psi. I've tried richer/leaner/more and less timing to see if I could get it to change, without going to the extremes, and I get nothing. So unless it changes it's just noise from something else.

AFAIK it's been reading the same levels of knock before AND after tuning. If I have time tonight I'll take the car for a spin and see what my knock levels are exactly, under different speeds/rpms etc and post up results. Unfortunately my laptop with my tuning map on it took a shit while I was deployed, AGAIN, so I can't do any adjustments or anything.

I have no idea what my old engine had for knock because I didn't have my PFC installed at that time. I wish I knew. Oh and I forgot to mention this last time, I'm not sure how much harder the Noltec mounts are than stock mounts, so I don't know how much of a factor that is either. I imagine the problem is between the mounts and exhaust, and who knows what else.

I have a friend here that has ALMOST a completely stock car (exhaust is RB I think, stock mounts and just switched to BNR stage 3 non-sequential) and his knock is almost non-existent, at least it used to be on his stock twins, I'm not sure what it is now. Probably didn't change.