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    Slight idle bounce 2004 chevy 8.1L

    I just had time to review 3 sets of live data across multiple RPM ranges I'm seeing a common thread. The LTFT on both banks seems to me to be very lean at idle -9% to -14% (not getting enough air?) At higher RPM'S it reading +5% to +9% (getting to much fuel?) I was under the impression that...
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    Best tuner for 2004 Chevy 8.1L

    Wondering what you all think would be a good tune for my gas hog. Not looking to brake the bank here. Tell me what you know about what the gains may be, thanks in advance. Sent from my SM-G530T using Tapatalk
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    Slight idle bounce 2004 chevy 8.1L

    It has an Idle Position Sensor build into the TB I believe. Not sure about a vacuum leak only because the STFT and LTFT are with +/-5%. I guess I could take a can of brake cleaner to it. Sent from my SM-G530T using Tapatalk
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    Slight idle bounce 2004 chevy 8.1L

    Just recently replaced my alternator thinking because it's diodes were going bad was why my idle was rough. Turns out that was not the case. The voltage swing is gone (except now when the idle drops, so does the voltage) but the idle bounce is still there. (We're talking from 600, to 500 then...
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