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Thread: Adding fuel D-cal

  1. #1
    Supporting Member Turbo Mopar Contributor turbo84voyager's Avatar
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    Adding fuel D-cal

    What is the best way using D-cal to add fuel between 6" and 4psi at Part throttle? I tried adding some fuel in the part throttle table but due to the o2 it seems to get me back to where I was. Since i can probabily use a little more fuel through the entire range, can I just add some fuel to the cold enrichment table ( I cant remember off hand, the one that is always active )
    Justin
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  2. #2
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    Re: Adding fuel D-cal

    The O2 will always try and find 14.7:1. Why do you want more fuel there?

  3. #3
    Supporting Member Turbo Mopar Contributor turbo84voyager's Avatar
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    Re: Adding fuel D-cal

    It does find 14.7 and that is where it runs. The engine sounds like it has very very slight detonation accelerating between 6" and 3 - 4 psi. I wanted to try to add a little fuel and see how it sounds.
    Justin
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  4. #4
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    Re: Adding fuel D-cal

    maybe retard the timing a bit instead?

  5. #5
    Supporting Member Turbo Mopar Contributor turbo84voyager's Avatar
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    Re: Adding fuel D-cal

    I did but I figured a little fuel might help. It might not even be detonation. It just seems when it goes rich under boost the engine sounds a little different
    Justin
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  6. #6
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    Re: Adding fuel D-cal

    Tweak pumping eff first around that goal, then tweak the part throttle table next. Mine was at 13:1 at 3400, I had to move the pump eff table alot to get it to 14.5 ish,
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  7. #7
    Supporting Member Turbo Mopar Contributor turbo84voyager's Avatar
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    Re: Adding fuel D-cal

    I fixed it. I added a slight amount of fuel to the pumping efficency and took a little timing out of the Advance RPM 2 table both around 1,800 rpm and 2,500 rpm.
    Justin
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