Quote:
Originally Posted by rich8102
There is a station not far from me that sells E85. Is it safe to fill the car with? If so, should the entire tank be filled? Or 50/50 mix of E85 and 93? Is it safe to put E85 in on a consistent basis? The only engine mod I have is a JB4 stage 1. Sorry for the newb questions, just did not want to damage the car in any way.
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You definitely don't want to fill the car with it, nor go with a 50/50 mix. The JB stage 1 cannot adjust fuel trims, and the ECU will only adjust them so much (I'm not sure of the exact number, but I'm guessing it's good up until about E25).
Keeping in mind your 93 octane has 10% ethanol already, you could get away with 1, maybe 2 gallons of 85 per tank . . . however I'm not sure if you'd feel much of a performance difference.