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Thread: Nitrous - what's the truth about fuel jetting (E85)

  1. #1
    Advanced Tuner Boost's Avatar
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    Nitrous - what's the truth about fuel jetting (E85)

    Let's suppose that the engine tuning on motor is very good, and one bolts on a wet shot kit with the base recommended jets. Runs excellent on nitrous, and then we switch to E85 fuel which the vehicle is fully capable of and tuned for, and still runs very good on motor, even better. But on nitrous it doesn't run well any more, feels weak. Or vice versa. My goal is to understand the theory behind jetting the nitrous for E85. I comprehend the base concepts and as stated vehicle runs excellent with both fuels on motor, and on spray with pump 93. But not on spray with E85 it is very weak and powerless, no hicupps though and solid.

    There are no files or logs because this is just a theory so I can understand a concept. Thank you
    '12 Caprice PPV 6.0 L77 - daily transportation
    8.7 @ 84 (1/8 mile) bolt-ons

    '02 Silverado RCSB 5.3 L59 - regularly street driven
    8.2 @ 86 (1/8 mile) stock cam and spray
    8.6 @ 84 (1/8 mile) cam and heads no spray

    Our YOUTUBE CHANNEL featuring the Silverado

  2. #2
    Advanced Tuner Boost's Avatar
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    Never mind we figured it out...
    '12 Caprice PPV 6.0 L77 - daily transportation
    8.7 @ 84 (1/8 mile) bolt-ons

    '02 Silverado RCSB 5.3 L59 - regularly street driven
    8.2 @ 86 (1/8 mile) stock cam and spray
    8.6 @ 84 (1/8 mile) cam and heads no spray

    Our YOUTUBE CHANNEL featuring the Silverado

  3. #3

    nitrous e85

    Quote Originally Posted by Boost View Post
    Never mind we figured it out...
    Sorry to bother you and i know your post is pretty old but, I'm also running a wet kit with e85 and it does feel as strong as with 93 could you tell me how you fixed your problem. Thanks in advance

  4. #4
    Advanced Tuner Boost's Avatar
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    I don’t remember the jets we used any more but it takes a different combo. Experiment carefully and find the sweet spot. Perhaps start small and observe patterns.
    '12 Caprice PPV 6.0 L77 - daily transportation
    8.7 @ 84 (1/8 mile) bolt-ons

    '02 Silverado RCSB 5.3 L59 - regularly street driven
    8.2 @ 86 (1/8 mile) stock cam and spray
    8.6 @ 84 (1/8 mile) cam and heads no spray

    Our YOUTUBE CHANNEL featuring the Silverado