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Thread: Idle (Transition) Tuning

  1. #11
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    Thank you Joe.

  2. #12
    Lifetime Member jfpilla's Avatar
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    Quote Originally Posted by Dirk Diggler
    Maybe this weekend i will fire her up and see if i can follow your guidlines. Good information none the less
    Nick's worked on f-bodies. He will post some info tomorrow.
    2003 red vert
    Mods:
    LS7 crate engine, wet sump, 24xx reluctor
    LPE 100mm MAF
    Vararam, cold air intake and bridge
    RPM Level 6/4L60e trans
    3.42 gears
    Yank SS3600
    1-7/8" AR headers
    Z06 exhaust
    470rwhp 437rwtq
    1/8th mi-1.526-60'-6.862-1/8th-@100.74mph

  3. #13
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    Cool me likes :-)

  4. #14
    Unknown Zone TAQuickness's Avatar
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    Can you post screen shots of the MAPS you created? I'm having a brain fart kind of day and need a visual to get me going in the right direction

  5. #15
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    Quote Originally Posted by jfpilla

    You have mail.
    Thank you.

  6. #16
    Lifetime Member Bruce Melton's Avatar
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    What determines the transition from closed loop to WOT tune reference?

    2000 C5 Coupe, 6M, Callies/Mahle stroked LS7 (441), Blackwing, Halltech, LS3 intake, 90mm Shaner TB, ported L92 heads, FAST 50# inj, not too much cam, Kooks 1 7/8" headers , 3" catless mid pipes, Z TIs, track suspension, , 3:90 rear, EFI V2, LM-2, etc.
    PowrMax Performance

    100 mm PowrMAF

    LM-2 EFILIve package with TAQ -sLM2 V-2 serial cable> Package deals

  7. #17
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    Quote Originally Posted by Bruce Melton
    What determines the transition from closed loop to WOT tune reference?
    MAP and TPS%.

  8. #18
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    Process is the same for the F-body. You just have to make sure the IAC motor is within range to give the motor the air it wants. With a big cam car the IAC uses up alot of its range or all of it just to get enough air thru for idle on a cold start. Two ways to fix this. You can drill the hole in the blade out bigger oryou can adjust the closed position set screw to open the blade more. Adjusting the screw will require a reset on the TPS to get it to read 0% at idle. The stock camaro that I have idles around 65 steps when hot. Use that as a target to determine how big of an adjustment to make. Once you have the IAC motor within range, then start trying to get the DESIAC gms/sec to match close to the MAF gms/sec.

  9. #19
    Lifetime Member jfpilla's Avatar
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    Thanks Nick, I've added your post to the original.
    2003 red vert
    Mods:
    LS7 crate engine, wet sump, 24xx reluctor
    LPE 100mm MAF
    Vararam, cold air intake and bridge
    RPM Level 6/4L60e trans
    3.42 gears
    Yank SS3600
    1-7/8" AR headers
    Z06 exhaust
    470rwhp 437rwtq
    1/8th mi-1.526-60'-6.862-1/8th-@100.74mph

  10. #20
    Lifetime Member jfpilla's Avatar
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    Quote Originally Posted by Dirk Diggler
    And the million dollar question is

    What if you dont have a maf. Can you just log DESIAC and put those values in folowing the steps above.

    in this case i think you could use the dynamic air pid logged in gm/sec to replace the maf value, but i think this table is back calcualted from the ve table....


    What about the lowly F-bodies :(
    Dirk,
    A good question. May not be worth a million, but good. I meant to give my .02 but forgot. It would seem to me that the Dynair pid would give the info you need. Isn't it's purpose for when the MAF sensor fails? I know it provides logged values when the MAF is disconnected or just 0'd. I went back and looked at those logs and the info looks consistant.
    Joe
    2003 red vert
    Mods:
    LS7 crate engine, wet sump, 24xx reluctor
    LPE 100mm MAF
    Vararam, cold air intake and bridge
    RPM Level 6/4L60e trans
    3.42 gears
    Yank SS3600
    1-7/8" AR headers
    Z06 exhaust
    470rwhp 437rwtq
    1/8th mi-1.526-60'-6.862-1/8th-@100.74mph

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