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MikeG183 · 09-03-2018, 12:06 PM

I've see it mentioned here that continually using higher octane premium fuel will eventually cause the ECU to eventually advance the timing (netting some performance benefit similar to an aftermarket tune for higher octane fuel). Any truth to that?

09-03-2018, 12:06 PM	#1
MikeG183 Drives: 2017 1LS 1LE Join Date: Jul 2017 Location: Kansas City Posts: 36	Premium Fuel Advanced Timing? I've see it mentioned here that continually using higher octane premium fuel will eventually cause the ECU to eventually advance the timing (netting some performance benefit similar to an aftermarket tune for higher octane fuel). Any truth to that?