I'm running an unmodified Turbonator stage IV cal in a 87 T2 LM and seems to run fine for the most part but the CEL comes on at basically anything over 10 psi. Base timing is 12 degrees, I only run 93 octane, A/F is fine, and I don't hear any audible knock. I going to data log the knock voltage tonight. Am I missing anything that could cause a false or real ignition knock?