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Thread: Help needed with E85 Tune- 2019 Dodge Challenger Scat Pack

  1. #1
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    Help needed with E85 Tune- 2019 Dodge Challenger Scat Pack

    I was hoping to get some feedback on the attached E85 tune, and why my engine won't start with it. I can start my engine with the attached Gas tune (91 octane). I'm running Ethanol @ 77%. Any ideas and tips would be greatly appreciated. The data log attached is what happens when trying to start my engine with the E85 tune. Full disclosure, I did not write either tune, and I'm a beginner with this stuff.







    Build:
    Whipple Supercharger W175AX 2.9
    Interchiller
    90mm throttle body with Hellcat closed air box
    Comp Cams Stage 2 blower camshaft
    Phaser locked
    Deatschwerks 1200cc injectors
    Deatschwerks dual fuel pumps
    Forged internals
    Beehive springs
    Solid valves
    Methanol injection
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  2. #2
    Advanced Tuner N2speed's Avatar
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    No changes to VE or Injector Data was done for the E-85,
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  3. #3
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    Quote Originally Posted by N2speed View Post
    No changes to VE or Injector Data was done for the E-85,
    Thanks for your reply. Are you talking about the fuel injector data sheet that comes with the fuel injectors? Also, as for the VE, is it just the same as the Gas tune?

  4. #4
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    Quote Originally Posted by N2speed View Post
    No changes to VE or Injector Data was done for the E-85,
    I attached 2 E85 tunes. The VE tables not changed was my fault. It was originally changed, but I have been trying to get it to work.
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  5. #5
    Advanced Tuner N2speed's Avatar
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    E-85 will requires about 30% more fuel so you nee to adjust the tune accordingly.
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  6. #6
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    Quote Originally Posted by N2speed View Post
    E-85 will requires about 30% more fuel so you nee to adjust the tune accordingly.
    I attached the wrong tune file. The E85 Tune 5282025 was the one used with the data log attached. What's weird is that my Gas tune will run my engine, and that's tuned for 91 octane.

  7. #7
    Advanced Tuner N2speed's Avatar
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    check your startup injector pulse looks like its dumping to much fuel, go back to stock and start from there, E-85 is very temp sensitive for start up issues
    www.n2speed.com
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  8. #8
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    Quote Originally Posted by N2speed View Post
    check your startup injector pulse looks like its dumping to much fuel, go back to stock and start from there, E-85 is very temp sensitive for start up issues
    So, comparing this revision to the E85 Tune05282025, what is so different that it works and not the other one?
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