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Thread: 04 gtp

  1. #21
    Tuner in Training dsmuts's Avatar
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    ltft reads 0.0 always. I have a wb hooked up separately. Nothing else done to fuel system other than injectors. 161K miles.
    04 Grand Prix Comp G. zzp headers, s1x cam, fsic, lq4 maf, 3.25"

  2. #22
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    Quote Originally Posted by dsmuts View Post
    ltft reads 0.0 always. I have a wb hooked up separately. Nothing else done to fuel system other than injectors. 161K miles.
    i have only ever done one VE tune and it was like 6 years ago but as i recall the LTFT's dont work when you unplug the MAF for a VE tune...I think. Do you get a reading for the STFT's? if neither change something is definitely fucked up with your MAF sensor.
    - 2001 Grand Prix XGT -- 11.57@122MPH
    - 2010 Chevy 2500HD LTZ -- Car hauler
    - 2011 BMW 328i Xdrive -- Wife's Daily
    - 2008 Ford F350 -- Under powered Pile O' Shit work truck

  3. #23
    Tuner in Training dsmuts's Avatar
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    I get stft always
    04 Grand Prix Comp G. zzp headers, s1x cam, fsic, lq4 maf, 3.25"

  4. #24
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    Quote Originally Posted by dsmuts View Post
    I get stft always
    i think there is a way in the scanner to shut off the LTFT's with the vcm controls IIRC. have you checked into that? make sure you dont have something funny going on there maybe. out of curosity what do the STFT's read?
    - 2001 Grand Prix XGT -- 11.57@122MPH
    - 2010 Chevy 2500HD LTZ -- Car hauler
    - 2011 BMW 328i Xdrive -- Wife's Daily
    - 2008 Ford F350 -- Under powered Pile O' Shit work truck

  5. #25
    Tuner in Training dsmuts's Avatar
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    stft's are reading normalish usually +-10 I haven't found a way to shut the ltft's on or off yet. I added 10% more to the maf table and now it's only leaning out at idle. At wot now I'm at 11.5
    04 Grand Prix Comp G. zzp headers, s1x cam, fsic, lq4 maf, 3.25"

  6. #26
    Tuner in Training dsmuts's Avatar
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    So my COT was still on so I'm gonna turn that off and drop my pulley a size and get some scans out of it.
    04 Grand Prix Comp G. zzp headers, s1x cam, fsic, lq4 maf, 3.25"

  7. #27
    Tuner in Training dsmuts's Avatar
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    well it was leaning out at idle because of my exhaust leak pre wb. I have fixed it and now it's fine at idle. A little more tuning and I think I'll be set. I'm going to swap to 60# injectors and throw some 1.8 roller rockers on and I think that'll be it for the motor for now.
    04 Grand Prix Comp G. zzp headers, s1x cam, fsic, lq4 maf, 3.25"