Hey Guys,
I have a 2001 Sierra C3 6.0 Stock LQ4, Radix with 2.9 Pulley(7 psi), 90mm TB conversion, LT and Corsa, running 94 octane. I went to the track the other night and did a bunch of logging, but keep getting KR and I want to know what needs to be done to fix it. I am running the stock 2001 LQ4 knock sensitivity.
My timing (from what Ive read) isn't really high, at 2800 its at 13.5 ish and ramps to 15.5-16 at 6000. I am running at AFR of 11.4-11.6, the logs show slightly higher than what is read on the wideband.
On the first log i got KR right from the launch, on the second i pulled about 1.5-2 degrees of timing from the entire map at WOT and still got KR, but it was not as bad. The final log only has about 12 degree of timing ramping to 14.5.
Is this all real knock, and if so do I need to run even richer and pull more timing to combat this? Am I not able to run much timing because of the stock cam? I will be putting a cam in soon...but for now need to get rid of the knock!
If it helps, ive also include a log of street driving where i get some KR once and a while.
Thanks for the help!