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      05-08-2023, 12:07 PM   #86
KawBoy
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Drives: 2012 E92 M3
Join Date: May 2012
Location: SE FL

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Quote:
Originally Posted by ///Mobbin View Post
Curious if anyone has slipped in a few gallons of E85 on a full tank when running the Epic tune? Mainly looking to decrease odors (or make them more pleasant) when running low cell (or no) cats.
I had a full tank [about 15 gallons] of E85 a few years ago. Car ran just fine. Only issue was right after starting the motor; idle would be slightly erratic, but a touch on the pedal would fix it. MPG went from the usual ~13mpg to about 9mpg.
Not long ago I put in just 1/4 of E85 to a tank that had 1/4 of gas and it was a nightmare. Same map, same everything, same station.
Since E85 is not 85% of ethanol, I believe this one had a different blend.
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