Quote:
Originally Posted by FastRaceCars
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.
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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