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Old 01-03-2013, 05:28 AM   #13
Dupree878
 
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Drives: '13 Dusk Edition 2SS/RS M6
Join Date: Nov 2012
Location: Tuscaloosa, AL
Posts: 600
Quote:
Originally Posted by FastRaceCars View Post
I've had some problems with the factory tune on my LS3 with the knock sensors detecting spark knock above 4600 RPM and retarding timing 3-6 degrees even when running on 93 Octane with octane boost. I've never actually been able to hear any noise, as you've described, but I can certainly feel the power loss when the timing changes under hard acceleration.

Same here. I blame it on E10 gas.
Only non ethanol I can get around here is 87 octane and its a 20 min drive
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