ptjones Posted December 11, 2015 Author Report Share Posted December 11, 2015 I saw that FORScan can log knock sensor readings and timing retard to due to detected knock. I'm going to log them and see if anything shows up with 87.Knock timing retard on 87 would be the ONLY reason that the car may show better fuel mileage on 93With the ScanGaugeII I see a difference in the timing between using Reg and Premium, the more time the fuel has time to burn, the more complete combustion and better MPG's by about 2mpg. :) Paul Quote Link to comment Share on other sites More sharing options...
ptjones Posted January 2, 2016 Author Report Share Posted January 2, 2016 BTW just a reminder that you need to use funnel in trunk to put in NOS Booster or any other fuel injector cleaners in the tank, otherwise you are going to make a mess on the ground. Expensive waste. :) Paul Quote Link to comment Share on other sites More sharing options...
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