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Thread: 2001 Z06 tune ?

  1. #1
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    2001 Z06 tune ?

    tuned an 01 Z06 with a wideband with in 2%, vehicle has Varam, 224R/.581 lift on 112 LSA and on off road pipe using stock manfolds, did SD VE then MAF tune, re-enabled closed Loop, LTFT are showing 15-25% positive down low and 2-8% midrange and part throttle, also getting a Fuel System Lean Bank 1&2 DTC now...someone help me out ? dont have tune file available it's on a other laptop right now...thanx for any help....

  2. #2
    Tuning Addict WS6FirebirdTA00's Avatar
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    need scans and tunes, so post them when you can.

    What does the WB read? did you reset the fuel trims when you tuned it? If the WB is reading 14.7 with those corrections, then there was an error made somewhere in the tune. Cant really help without info from logs and what not though.
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  3. #3
    Супер Модератор EC_Tune's Avatar
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    If you go back to SD, are the trims in line or out of whack? If they are in line, then you have a vacuum leak between the MAF & heads.
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    dont have them available right now...SD was within 2% of 14.7, MAF error was within 2% after tuning, re-enabled MAF and closed loop and trims are way off down low and about 4-8% midrange to WOT..didnt check LTFT after SD, only after everything else was done.....will check trims in SD and see what happens....WB in closed loop reads stioch or very close but trims are showing way off...thanx guys

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    here is the tune and a log

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    Супер Модератор EC_Tune's Avatar
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    Yeah, LTFT's are way off. Have you tuned on the MAF yet? If not, that's the issues.
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  7. #7
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    yes i did, within a couple % of indicated WB readings...why are the LTFT so far out but the STFT are showing - ?

  8. #8
    Супер Модератор EC_Tune's Avatar
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    STFT will make the LTFT's move +/- accordingly. Thus, when the LTFT moves the STFT drops back to 0 or near 0.

    Another reason I tune with the LTFT's turned off. Takes too long to "learn". LOL
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  9. #9
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    LTFT were disabled