Originally Posted by jwikoff99
However, going 70 mph on the highway, floor it so it shifts to second, I saw 17 DEGREES for a moment, dropped to 11 then dropped off.
Don't assume it'* false knock. By all means check around for potential causes but the situation you describe is more common than you might think.
Flash KR like above can, and often is, caused by lean mixtures.
If your LTFTs are such that the PCM pulls fuel in Open Loop mode it may indicate you need some MAF tuning. Also, you'll often find a lot more AE (acceleration enrichment) is needed to quench that knock. I've seen cars need triple the OEM setting of AE (like an accelerator pump for you carb guys) to get past this hump.