nkoenig

I didn’t get an e85 tune. Everything is still the way it came from the factory.

So far so good. My mpg has minimally suffered, but in return I have lots more power. All I’m saying is, the now $300 conversion (instead of the $100 option) might not be necessary. I will return to running 87 during the cold months.

I have a 2015 Silverado LT 4x4 Double Cab 5.3 with RPO code FH0 (Not Flex Fuel). I have been running E85 in my truck for the last 4 tanks with absolutely ZERO problems. No check engine light, no stuttering, no hesitations, no misfires on cold starts. I am beginning to believe this $100 option is for a yellow gas cap? It wouldn't surprise me a bit, and I'm going to continue to run E85 till winter hits. I can definitely tell those extra 25 ponies are behind the wheel!!!!!!!