Originally Posted By: TiredTrucker
Originally Posted By: Clevy
Originally Posted By: TiredTrucker
If it is the best cost benefit to use, then go for it! I am about to pull the trigger on a Diablo Intune programmer and use the 93 octane performance tune along with E85 in my 2013 Siverado with 5.3L flex fuel and see how it plays out for me. I have read of others doing it that way, and Diablo emphasizes that using that 93 octane tune with E85 is a win-win. And with the Intune, I can tweak the settings considerably. I run E85 almost exclusively, os it is the best situation to test this out.
If your vehicle is a flex fuel it has a tune for e-85 already programmed into the ecu. A tuner isn't going to help in any way.
The ecu advances the timing significantly,hence the power boost,when running corn.
In order to truly improve on this stock tuning you'd need to get the vehicle dyno-tuned,otherwise your throwing money away
I have an intune and have it tuning my charger right now. There is no provision for ethanol.
Get it dynotuned.
The Diablo was for the ECM enhancements over stock with a 93 octane tune, shutting down AFM, and firming up the shifts. Just so happens that the E85 fits nicely into that parameter. Plenty of comments about this in the forums at DiabloSport. I just installed the Diablo 93 tune, and after running it for a couple of weeks and let it settle in, I am going to get Andy at Dynotune USA in S.D. to work up a custom E85 tune on top of it. That is his specialty, E85. I have to have it running a tune and then do a log file for Andy to tweak the Diablo tune best for my vehicle.
So, not really sure that I am throwing any money away. This is the same procedure that others use in getting Lew or one of the other CMR custom tuner people to work up a vehicle specific tune. It doesn't have to go on a dyno to get a good ECM tune. The log files tell all that is needed.
Remote tuning is never as good as a dyno tune. I've done both.
And when your ecu senses e-85 it advances the timing way beyond what a canned 93 octane tune for gasoline.
On that tuner the way to get more performance would be to adjust the stock tune because the ecu would be running the e-85 tune.
You could advance the timing and add fuel to get a bit more power but even uploading the 93 octane tune just modifies the gasoline tune and not the e-85 tune and could actually cost you performance.
The diablo tune on that tuner is for 94 octane fuel. The one named diablo. Its a tune for gasoline,not e-85.
I doubt you could even modify the e-85 tune with the intune tuner. I have that tuner and no where is it an option
Because your vehicle is a flex fuel vehicle it uses the knock sensor to determine what fuel is being burned then adjust the fuel trims and timing. Uploading a gasoline tune for 93 octane is pointless and takes away from what the ecu is already doing.