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larry_g · 12-24-2015, 10:21 PM

I am getting some fairly consistent knock retard (4-8*) around 3000 rpm and again around 5000 rpm during WOT runs in 3rd gear. This is happening with three different tunes, the stock 93 tune (SCT X4) and two mail order tunes from reputable vendors. Car is stock except for a Roto-Fab intake and a generic oil separator on the PCV line. Always use 93 octane.

I plan on trying an octane booster to see if that makes a difference, but I am beginning to agree with the suggestion that it might just be false knock, even though I am not seeing or hearing anything obviously loose.

Even if it is false knock, it's still pulling timing, and therefore not running to it's potential. Any thoughts on what I should be checking more closely as a source?

12-24-2015, 10:21 PM	#1
larry_g Drives: 2014 1SS/1LE Join Date: Nov 2015 Location: Louisville, KY Posts: 826	False knock help? I am getting some fairly consistent knock retard (4-8*) around 3000 rpm and again around 5000 rpm during WOT runs in 3rd gear. This is happening with three different tunes, the stock 93 tune (SCT X4) and two mail order tunes from reputable vendors. Car is stock except for a Roto-Fab intake and a generic oil separator on the PCV line. Always use 93 octane. I plan on trying an octane booster to see if that makes a difference, but I am beginning to agree with the suggestion that it might just be false knock, even though I am not seeing or hearing anything obviously loose. Even if it is false knock, it's still pulling timing, and therefore not running to it's potential. Any thoughts on what I should be checking more closely as a source?