Page 2 of 2 FirstFirst 12
Results 21 to 29 of 29

Thread: high neg ltft/possible hpfp or hpfs

  1. #21
    Tuner
    Join Date
    Jan 2021
    Location
    winchester indiana
    Posts
    66
    here tune from back when
    Attached Files Attached Files

  2. #22
    Tuner
    Join Date
    Jan 2021
    Location
    winchester indiana
    Posts
    66
    i usally read in lambda but you think that the aem wideband with the obd2 dongle where its already to rock. that shouldnt have any control over fuel what so ever shoulkd it. just reading info an displaying. right? funny thing it was running rich an in lambda was 10 12 percent from stioch.on wideband.but hp scanner way high neg. now that ive taken off maf fuel trims positive on sc anner an 20 percent lean on aem

  3. #23
    Tuner
    Join Date
    Jan 2019
    Location
    Bonita Springs
    Posts
    108
    Quote Originally Posted by [email protected] View Post
    i usally read in lambda but you think that the aem wideband with the obd2 dongle where its already to rock. that shouldnt have any control over fuel what so ever shoulkd it. just reading info an displaying. right? funny thing it was running rich an in lambda was 10 12 percent from stioch.on wideband.but hp scanner way high neg. now that ive taken off maf fuel trims positive on sc anner an 20 percent lean on aem
    Is the wide band in a 02 bug after the cats or is it in a innovate tail pipe adapter in the tail pipe?

  4. #24
    Tuner
    Join Date
    Jan 2021
    Location
    winchester indiana
    Posts
    66
    its bout 3 in from factory locatiom welded bung
    no cats iam in indiana where we dont do inspections this a swap anyways

  5. #25
    Tuner
    Join Date
    Jan 2021
    Location
    winchester indiana
    Posts
    66
    this is true duals where they use mufflers an dump right behind cab,and one bank is running wideband witch has worked before, didnt think it was leaky exhaust cause both trims on both banks

  6. #26
    Tuner
    Join Date
    Jan 2021
    Location
    winchester indiana
    Posts
    66
    here the tune got a new maf an well its crazy again until it fails
    Attached Files Attached Files

  7. #27
    Tuner
    Join Date
    Jan 2021
    Location
    winchester indiana
    Posts
    66
    finally got this scaled right i think.may have toasted b1 o2 sensor bank one trying pull fuel.check every where for leaks an there is none .
    Attached Files Attached Files

  8. #28
    Tuner
    Join Date
    Jan 2019
    Location
    Bonita Springs
    Posts
    108
    looks pretty good. Get rid of the PE enrichment delay, 0 it out. Enable pedal to 50% and Enable tq to 50%. Put Enrichment ramp in to 1.000. then set PE gas table and alcohol table to 1.148 from 0-8192 rpms. We need to get rid of those Power enrichment delays not that you're not tuning for idle part throttle. What wide band are you using, cause I don't see it on your log?

    Ryan

  9. #29
    Tuner
    Join Date
    Jan 2021
    Location
    winchester indiana
    Posts
    66
    aem is brand wb its obd2 dongle one its in passenger pipe bout 18 i n. from number 8 exhaust port its true duals on 93 silverado so it crosses over on passenger an driver longer so i put it in passenger side.I tune in lambda.table in tune already e85 in stioch table.after running tank half finally up to 70 percent i had changed hpfp maf sensor o2 sensors. swapped plugs to oppisite banks. ive been having more issues now probably wiring or clogged injector or faulty plugs an plug wires.Like you said it not a lean command so ive checked intake 3 x an exhaust no leaks no noise like caqm ground up or afm lifter taking crap.run cold good till temp somtimes.after warm idles great.put load on it starts miss firing till trims even out but underpowered a little.just runs like crap at off iddle to 1800 rpm. got regulator on low side see it hold 68 psi under load an set at 70. walbaro ti 450lph pump.workin g on another harness now have had before 02 sensor plugs where loose an well had this harness off an on alot.resistance tested it good so iam lost after last part the maf an finall getting this maf an seting up editor an doing logs.just at one those humps tring push through its just 15 degrees out so wish me luck any tips are appriciated thanks