ECUflash Add 1 Gal Race Gas to my 91 Tune?

[afjhal]

Hello everyone,,
I AM NOT A TUNER Now that being said I can build the car mechanically but not much of a tuner at all. Ricky tuned my car on pump 91 because thats all I have avaliable. So as it gets warmer and the intercooler is heat soaked I do get some knock. So the question is if I add a gal of race fuel to my normal 9-10 gal of gas will that stop the knock? Or I can add a gal of Toulene. Will that mess up my tune?

 

[AWD-Tony]

You'll be fine. All you're doing is raising the octane level.

 

[1cleangsx]

You can also splash in a gallon of e85

 

[Vegas Smith]

You can also splash in a gallon of e85

Ha, I wouldn't do that unless he has flex fuel. Plus he said he can only get 91

 

[1cleangsx]

You’re right , better safe than sorry

 

[rabenne]

Ha, I wouldn't do that unless he has flex fuel. Plus he said he can only get 91

Might I ask why?

 

[Vegas Smith]

Might I ask why?

You may. E85 can throw off your fuel trims depending on how much gas is in the tank.

 

[1cleangsx]

I personally dabbled with splashing in a little e85 before I made the full switch, I also had a wide band and was able to closely monitor afr’s, but honestly Vegas is right, you don’t want to mess up your fuel trims, the higher the ethanol content in your tank the leaner your afr’s will be, Unless you adjust your global fuel setting to compensate, but that depends on injector size and current duty cycles. Honestly it’s not worth it unless you can make full swap and really gain from the benefits

 

[afjhal]

Hello everyone,,
I AM NOT A TUNER Now that being said I can build the car mechanically but not much of a tuner at all. Ricky tuned my car on pump 91 because thats all https://trackeasy.fun/usps/ https://showbox.tools/ I have avaliable. So as it gets warmer and the intercooler is heat soaked I do get some knock. So the question is if I add a gal of race fuel to my normal 9-10 gal of gas will that stop the knock? Or I can add a gal of Toulene. Will that mess up my tune?

Thank you my issue has been solved,...

 

[jed344]

As long as the race gas Is non oxygenated it will not change anything but more octane rating. I will say though if e85 is available to you I would go that route. I was amazed by it and now myself and everyone I tune runs nothing but e85.