1.3, as you mentioned, is stock so I would set it to that. This has been working for me for several years. I used to get a lot of false knock with the 1.0 setting.

Also, just a side note, I see in your sig you're running PAC 1218s. I would swap those out for dual springs as I had a 1218 snap in half on me after being boosted for only a couple months...

 

Well I used the 02 Silverado B6245 and dropped the timing to around 10 deg in the problem area and I didn't get any KR today, but then again it was a cool morning. I'll try again this afternoon.

Also going to switch to the 2 port eBoost street connection because I've maxed out the single port capability. At Sp=99 it's doing around 11.5psi. I figure the 2 port method will get me a few more PSI.

 

we have 93 here in houston thats why. Either way, check your IAT spark tables. Turbos get really hot and ur iat spikes up fast. , so either try to isolate ur turbo''s heat or reduce timing!

 

I am not getting into IAT timing, my IAT's rarely go above 100F and my IAT timing tables don't start pulling timing until much higher IAT's.

 

log all of ur retard PIDS then. See what is actually pulling timing, if nothing is, then run RACE GAS, and youll see if its actual knock due to 91 octane. That will be the end all solution.

 

Nothing is pulling timing other than knock retard. Burst KR was pulling timing but I disabled it. Unfortunately in COS5 in EFILive the spark pids aren't supported other than spark advance and KR.