Thread: Need OBD2 MAF hz formula

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  1. #1 Need OBD2 MAF hz formula 
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    i searched and searched but couldnt find the formula for the PID for the mass air flow frequency to input into my torque app in my droid. i saw dark horizon posted a formula in the threads a while back but the way he written it out didnt make sense especially the "<<" symbol and whats with the extra paranthesis? see below:

    ((N1 << 8) + N2) / 2.048

    http://www.grandprixforums.net/threa...ding-MAF-in-Hz
    old setup-Z7 Turbo Kit w/T66, A2A I/C, stock cam & valvetrain/LS1 MAF/Ported 99TB/PowrTuner/AFC/Devils Own/LS1M Scanner/PRJ FP/42# Injs=12.3@118mph street tires -
    (Sold)BACK TO M90 Vs cam w/3.5" pulley/meth/25* timing+bolt-ons
    01 Z28 A4 HP-self-tuned, LTs, FTRA, 3600stall 12.3@112mph
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  2. #2 Re: Need OBD2 MAF hz formula 
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    *bump
    i put this in the custom PID entry in the app and still nothing works to display the MAF:
    (N1< 8) + N2)) / 2.048
    old setup-Z7 Turbo Kit w/T66, A2A I/C, stock cam & valvetrain/LS1 MAF/Ported 99TB/PowrTuner/AFC/Devils Own/LS1M Scanner/PRJ FP/42# Injs=12.3@118mph street tires -
    (Sold)BACK TO M90 Vs cam w/3.5" pulley/meth/25* timing+bolt-ons
    01 Z28 A4 HP-self-tuned, LTs, FTRA, 3600stall 12.3@112mph
    Reply With Quote  
     

  3. #3 Re: Need OBD2 MAF hz formula 
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    Bump
    old setup-Z7 Turbo Kit w/T66, A2A I/C, stock cam & valvetrain/LS1 MAF/Ported 99TB/PowrTuner/AFC/Devils Own/LS1M Scanner/PRJ FP/42# Injs=12.3@118mph street tires -
    (Sold)BACK TO M90 Vs cam w/3.5" pulley/meth/25* timing+bolt-ons
    01 Z28 A4 HP-self-tuned, LTs, FTRA, 3600stall 12.3@112mph
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  4. #4 Re: Need OBD2 MAF hz formula 
    Killa Bee Scottydoggs's Avatar
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    and whats the point of this?

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, gen 5 N* 3.0 pulley, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
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  5. #5 Re: Need OBD2 MAF hz formula 
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    I want to scan the maf hz pid when I'm scanning and tuning. Don't want to carry around my laptop when logging data as i can use the app
    old setup-Z7 Turbo Kit w/T66, A2A I/C, stock cam & valvetrain/LS1 MAF/Ported 99TB/PowrTuner/AFC/Devils Own/LS1M Scanner/PRJ FP/42# Injs=12.3@118mph street tires -
    (Sold)BACK TO M90 Vs cam w/3.5" pulley/meth/25* timing+bolt-ons
    01 Z28 A4 HP-self-tuned, LTs, FTRA, 3600stall 12.3@112mph
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  6. #6 Re: Need OBD2 MAF hz formula 
    Killa Bee Scottydoggs's Avatar
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    if you have a tuner use the damn laptop, why the fvck would you want your live data scan from the t app? thats just not safe in my book. or logical either.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, gen 5 N* 3.0 pulley, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
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  7. #7 Re: Need OBD2 MAF hz formula 
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    Using the app because it's portable and can be used easier and more convenient
    old setup-Z7 Turbo Kit w/T66, A2A I/C, stock cam & valvetrain/LS1 MAF/Ported 99TB/PowrTuner/AFC/Devils Own/LS1M Scanner/PRJ FP/42# Injs=12.3@118mph street tires -
    (Sold)BACK TO M90 Vs cam w/3.5" pulley/meth/25* timing+bolt-ons
    01 Z28 A4 HP-self-tuned, LTs, FTRA, 3600stall 12.3@112mph
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  8. #8 Re: Need OBD2 MAF hz formula 
    Killa Bee Scottydoggs's Avatar
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    makes no sense to me at all. so your gonna trust some mathematical equation you cant even trust? theres a reason no one knows this answer.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, gen 5 N* 3.0 pulley, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
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  9. #9 Re: Need OBD2 MAF hz formula 
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    the mathetical equation would be equivalent to calculating gear ratio, tire diameter, injector flow rate, MAF by g/s etc. its been figured out and floating around. i just cant seem to find the formula posted for that particular PID. honestly im here looking for the formula, not whether if its a good idea to use it or not use it. this isnt a thread on debating and arguing whether its useful to use on anything other than a laptop. i appreciate the info and suggestion but im still going forward.
    old setup-Z7 Turbo Kit w/T66, A2A I/C, stock cam & valvetrain/LS1 MAF/Ported 99TB/PowrTuner/AFC/Devils Own/LS1M Scanner/PRJ FP/42# Injs=12.3@118mph street tires -
    (Sold)BACK TO M90 Vs cam w/3.5" pulley/meth/25* timing+bolt-ons
    01 Z28 A4 HP-self-tuned, LTs, FTRA, 3600stall 12.3@112mph
    Reply With Quote  
     

  10. #10 Re: Need OBD2 MAF hz formula 
    Killa Bee Scottydoggs's Avatar
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    i was merely pointing out no one does this. so the answer is not gonna happen anytime fast. because its not practical in the end.


    and DH and his 1/2 a answers are not not gonna help either. hes been banned.......

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, gen 5 N* 3.0 pulley, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
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  11. #11 Re: Need OBD2 MAF hz formula 
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  12. #12 Re: Need OBD2 MAF hz formula 
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    Thx notdarkhorizon. Ill try it out!
    old setup-Z7 Turbo Kit w/T66, A2A I/C, stock cam & valvetrain/LS1 MAF/Ported 99TB/PowrTuner/AFC/Devils Own/LS1M Scanner/PRJ FP/42# Injs=12.3@118mph street tires -
    (Sold)BACK TO M90 Vs cam w/3.5" pulley/meth/25* timing+bolt-ons
    01 Z28 A4 HP-self-tuned, LTs, FTRA, 3600stall 12.3@112mph
    Reply With Quote  
     

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