E85?

310racing · March 21, 2015

I haven't had time to send in tune. They promptly replied to my email, and asked for the tune file, no data logs.

I pulled it last night, and will send it in today.

I had to reinstall the flex tune the way I set it up, so that I could send the file he requested in, and it def shifts lazy on regular accel. The flex tune is better than stock, but makes you appreciate the regular Diablo tune in the first few miles of running the current flex tune.

They sent me an update, very easy to work with, and quick.

I uploaded the tune and am currently driving it to test, jury still out.....it's much better than the original flex tune, but it's still doesn't feel as strong or drive as good with the flex tune installed. Gonna drive a bit more before I go back to the Diablo tune.

Gmcant33 · March 21, 2015

Just got 23mpg with e85

I did follow a semi going 55 on smooth country roads lol.

Let me guess you were drafting? Lol

Only price you'll pay would paint chips and and window chip Well risking it of course

patriot · March 21, 2015

Only price you'll pay would paint chips and and window chip Well risking it of course

It's called tailgating and it's stupid dangerous for everyone.

I brake check people for that. HARD.

Gmcant33 · March 21, 2015

It's called tailgating and it's stupid dangerous for everyone.

I brake check people for that. HARD.

Lol I hate when I drive my 1500 and people tailgate especially where I live no one has insurance but I don't mind when I drive my semi

bdsilverado · March 21, 2015

It's called tailgating and it's stupid dangerous for everyone.

I brake check people for that. HARD.

I never said I was tailgating I was at least 3-4 full car lengths back. Thus why I said I don't know what the hell was going on when he said "let me guess you were drafting".

I actually do know what made me do this.... just over 1 rpm the entire time

patriot · March 21, 2015

Psssssssssst! That's one THOUSAND RPMs....but what's an error of a few orders of magnitude anyhow? ;)

02suburbanZ71 · March 21, 2015

Last summer there was a guy tailgating me in a brand new jeep and had the top off and doors off and i had my wiper fluid full to the top and held the button till i ran out of fluid! I saw him in the mirror wiping his sunglasses off! I soaked him

02suburbanZ71 · March 21, 2015

I never said I was tailgating I was at least 3-4 full car lengths back. Thus why I said I don't know what the hell was going on when he said "let me guess you were drafting".

I actually do know what made me do this.... just over 1 rpm the entire time

I was just kidding about drafting.

David_ · March 25, 2015

So what is the consensus on using E85 in the 2015 5.3L without RPO FHS? I refuse to believe that the $100 up-charge gets you anything of merit.

mjj · March 25, 2015

So what is the consensus on using E85 in the 2015 5.3L without RPO FHS? I refuse to believe that the $100 up-charge gets you anything of merit.

I think I remember someone mentioning that it doesn't come with the ethanol sensor in the fuel line. Without it I'd think the ECU couldn't take advantage of the included second tune meant for E85. I wonder if anyone on here with one of those OBDII readers and a 2015 without the option can get an ethanol reading or not. That might give us a better guess.

02suburbanZ71 · March 25, 2015

So what is the consensus on using E85 in the 2015 5.3L without RPO FHS? I refuse to believe that the $100 up-charge gets you anything of merit.

Are you telling me E85 is not standard on the 15' 5.3?

David_ · March 25, 2015

Are you telling me E85 is not standard on the 15' 5.3?

It is apparently an added option (RPO code FHS) for $100. I haven't seen any in the wild.

02suburbanZ71 · March 25, 2015

It is apparently an added option (RPO code FHS) for $100. I haven't seen any in the wild.

Flex was standard in the sub 2002-06 lol. For 100$ its probably just a configuration in the ecm

David_ · March 25, 2015

I wonder if anyone on here with one of those OBDII readers and a 2015 without the option can get an ethanol reading or not. That might give us a better guess.

Good idea. It looks like PID 52 will give you the ethanol percentage.