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Discussion Starter · #1 ·
I was just wondering if it was possible to run a couple of gallons of E85 to a full tank of 93oct? I am running the Deatchworks 1000's that are E85 compatible but how about the rest of the hellcat fuel system,is it capable of running E85?

Thanks
 

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Discussion Starter · #3 ·
Fuel system is rated for 91 oct with up to 10% eth or higher. If you want to run E85, it'll require a tune.

753RWHP - e85 Tuned Hellcat
I dont want to run e85 the whole time,just want to add a gallon or 2 to a full tank of 93oct just to help raise the octane a little when im running the car hard or on the dyno.
 

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Discussion Starter · #5 ·
Probably get with HHP or Serious HP to discuss tuning, the stock hellcat fuel system capabilities.

We read about mixing fuels but I'd rather get some solid feedback from the tuners.
I know Josh hasnt really messed with e85 so ill get with serious as i have seen their work with e85, thanks for the suggestions.

Could save you and your engine a lot of money.
 

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Discussion Starter · #12 ·
yes you can easily run a few gallons of e85 per tank with no ill effects.

On a forced induction car you should run a bit extra octane for safety as detonation is the most destructive thing to your engine.

Yes e85 has less btu than gasoline but that will not lose hp which was mentioned earlier
Let me explain what happens when you put a few gallons of e85 in to top off your tank.

-First your car's wide band will note that car is tunning a tiny bit lean while idleing and adjust short term and long term fuel trims to adjust. Typically cars can handle + - 20% fuel trims to compensate for altitude and other weather changes before throwing a check engine code.
So the car will notice it has 3 gallons of e85 per tank and it will add a few percent enrichment to the fuel map to bring it right back where it wanted to be 14.7:1 at idel and cruising. Wide open throttle maps take this in consideration and will run just fine.
All you get is a few extra octane points adding e85 which will help with detonation. I would just run the car a few miles before getting on it so the car adjusts.
Yeah i have this chart and it says it will bump it up to 95.5 with 2 gals to a full tank.
 
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