Thread: getting fuel trims dialed in

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  1. #1 getting fuel trims dialed in 
    GXP Level Member Timing's Avatar
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    Just want to make sure im at where im supposed to be here are some screen shots after 2 30 min drives

    08 MazdaSpeed 3- Treadstone tr8l, Ebay Piping, Ported intake,Thermal gasket, Cs Injector Seals,Cobb intake/inlet, Autotech Internals, Poly mounts, Speed Daddy DP, Magnaflow CB,
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  2. #2 Re: getting fuel trims dialed in 
    GXP Level Member GTPpower's Avatar
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    What histogram are you scanning? MAF vs. LTFT error? Or Wideband?

    Either way, that looks incredibly good. I never spend that much time dialing it in that close.


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  3. #3 Re: getting fuel trims dialed in 
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    Quote Originally Posted by GTPpower View Post
    What histogram are you scanning? MAF vs. LTFT error? Or Wideband?

    Either way, that looks incredibly good. I never spend that much time dialing it in that close.
    MAF vs LTFT it seems.

    I agree, that's pretty much perfect.
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  4. #4 Re: getting fuel trims dialed in 
    GXP Level Member Timing's Avatar
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    kool
    08 MazdaSpeed 3- Treadstone tr8l, Ebay Piping, Ported intake,Thermal gasket, Cs Injector Seals,Cobb intake/inlet, Autotech Internals, Poly mounts, Speed Daddy DP, Magnaflow CB,
    RPF1 17x9 255/45 Direzza Zll
    04 COMPG- Vs, getrag 284 RIP
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  5. #5 Re: getting fuel trims dialed in 
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    hmm idk why but last scan i did now they are reading way off


    could it be due to rain?
    08 MazdaSpeed 3- Treadstone tr8l, Ebay Piping, Ported intake,Thermal gasket, Cs Injector Seals,Cobb intake/inlet, Autotech Internals, Poly mounts, Speed Daddy DP, Magnaflow CB,
    RPF1 17x9 255/45 Direzza Zll
    04 COMPG- Vs, getrag 284 RIP
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  6. #6 Re: getting fuel trims dialed in 
    GXP Level Member Timing's Avatar
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    Quote Originally Posted by matt5112 View Post
    MAF vs LTFT it seems.

    I agree, that's pretty much perfect.
    Quote Originally Posted by GTPpower View Post
    What histogram are you scanning? MAF vs. LTFT error? Or Wideband?

    Either way, that looks incredibly good. I never spend that much time dialing it in that close.
    this isnt good
    08 MazdaSpeed 3- Treadstone tr8l, Ebay Piping, Ported intake,Thermal gasket, Cs Injector Seals,Cobb intake/inlet, Autotech Internals, Poly mounts, Speed Daddy DP, Magnaflow CB,
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    04 COMPG- Vs, getrag 284 RIP
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  7. #7 Re: getting fuel trims dialed in 
    GXP Level Member darkhorizon's Avatar
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    put a stock maf tune back on. Fiddle with the injector constants a bit if the trims are constantly in one direction after a few weeks of driving it.
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