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Thread: help on Maf Tuning few questions..

  1. #1
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    Default help on Maf Tuning few questions..

    Search feature wont let me seach for 3 letter words.....

    How exacty do I recallibrate the Maf? I made up a MAP with BEN in the data, engine rpm in the column, and MAF freq in the row. It looks exactly like the map in the efi-live tune. I hooked the maf back up and drove... it apears as if I am getting the corrections on the map but am still unsure how exacty I got them..... Can someone post a link on how to tune the Maf?

    Also I have my VE table tuned up to 4000K as it was understanding that thats as high as I needed to tune it...right?

    Thanks -Wayne
    99 C5 6speed LS2 402ci DTE 3.90 diff w/hardened output shaft, FLP headers, No Cats, ZO6 mufflers, Haltech Cobra CAI, Ported Fast 90 and LS2 TB, 42 Delphi, ZO6 Maf, EFI-Live, LC-1 wideband, Comp XE-r 232/236 .598/.605 112+0 lsa, AFR 205 heads milled .036 w/ Cometic .045 gaskets, TR 7.4 pushrods, textrila clutch, ASP underdrive pully, 490rwhp/474rwtq 10.83@130.6 1.59 60ft
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  2. #2
    Unknown Zone TAQuickness's Avatar
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    You will need to dial in your VE table across the board before attempting to tune the MAF.

  3. #3
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    I have it tuned up to 4k rpm so your saying I need to do the entire rpm range?
    99 C5 6speed LS2 402ci DTE 3.90 diff w/hardened output shaft, FLP headers, No Cats, ZO6 mufflers, Haltech Cobra CAI, Ported Fast 90 and LS2 TB, 42 Delphi, ZO6 Maf, EFI-Live, LC-1 wideband, Comp XE-r 232/236 .598/.605 112+0 lsa, AFR 205 heads milled .036 w/ Cometic .045 gaskets, TR 7.4 pushrods, textrila clutch, ASP underdrive pully, 490rwhp/474rwtq 10.83@130.6 1.59 60ft
    10.96 video
    in car vids
    10.9 runs

  4. #4
    Unknown Zone TAQuickness's Avatar
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    yup. The VE table has to be right so you have an accurate means to know how far off your MAF is

  5. #5
    Unknown Zone TAQuickness's Avatar
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    Also remember, when in MAF opperation, the VE is your back up. So if your MAF fails, you want your back up to be spot on

  6. #6
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    Damn it was hard enough logging and updating the VE table below 4k..... when would the car use the VE table above 4k? only in a MAF failure?

    Do you have the procedure to recalibrate the MAF so when I get done I can move to it?
    99 C5 6speed LS2 402ci DTE 3.90 diff w/hardened output shaft, FLP headers, No Cats, ZO6 mufflers, Haltech Cobra CAI, Ported Fast 90 and LS2 TB, 42 Delphi, ZO6 Maf, EFI-Live, LC-1 wideband, Comp XE-r 232/236 .598/.605 112+0 lsa, AFR 205 heads milled .036 w/ Cometic .045 gaskets, TR 7.4 pushrods, textrila clutch, ASP underdrive pully, 490rwhp/474rwtq 10.83@130.6 1.59 60ft
    10.96 video
    in car vids
    10.9 runs

  7. #7
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    Anyone?
    99 C5 6speed LS2 402ci DTE 3.90 diff w/hardened output shaft, FLP headers, No Cats, ZO6 mufflers, Haltech Cobra CAI, Ported Fast 90 and LS2 TB, 42 Delphi, ZO6 Maf, EFI-Live, LC-1 wideband, Comp XE-r 232/236 .598/.605 112+0 lsa, AFR 205 heads milled .036 w/ Cometic .045 gaskets, TR 7.4 pushrods, textrila clutch, ASP underdrive pully, 490rwhp/474rwtq 10.83@130.6 1.59 60ft
    10.96 video
    in car vids
    10.9 runs

  8. #8
    Joe (Moderator) joecar's Avatar
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    Set up a 1 x 84 BEN map to mimic the MAF table:
    RPM vs MAFFREQ (does not really matter what you put across the top)
    MAFFREQ goes 1500..12000 in steps of 125
    RPM goes 0..8000 in steps of 8000 (see what I mean)

    Then enable the MAF, drive and log, and then use this map to apply filter and corrections ("paste-with-multiply") to the MAF table, very much like doing the VE table.

    But first, like TA said, make sure your VE table is dialed in.

    If you can't hit > 4k, then cheat by setting the "hide low cell count" value to 10, but use common sense.

  9. #9
    EFILive Reseller ringram's Avatar
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    MAF is almost a 4 letter word (MassAirFlowMeter MAFM) to some around here.
    I think the best way to tune it in is with a hammer in the rubbish bin along with the O2 sensors.
    Get EFILive in europe (http://www.efilive.eu).
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  10. #10
    Joe (Moderator) joecar's Avatar
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    Quote Originally Posted by ringram
    MAF is almost a 4 letter word (MassAirFlowMeter MAFM) to some around here.
    I think the best way to tune it in is with a hammer in the rubbish bin along with the O2 sensors.

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