Page 3 of 3 FirstFirst 123
Results 41 to 53 of 53

Thread: ls6 turbo tune help

  1. #41
    Tuner z06 vett's Avatar
    Join Date
    May 2008
    Location
    mobile,alabama
    Posts
    56
    it is a few inches above the intercooler.mike cleaned it with electronic parts cleaner.it did not help.he was to send to scans,one driving and one to show in nuetral with no load ,the motor winds up and down sweat smoth.the trouble is under load/boost.it is at 20afr idle and ~13 cruise .he will send them at 7;00pm.all your tunes with the MAF on have had a way better idle and great driveability under 4k rpm.
    do i need a 2bar map sennsor?i noticed that the hpt is a two bar register tune?should this be set on a one bar?does it make a diff.
    thanks,mike
    p.s.
    i am reading all i can

  2. #42
    Tuning Addict WS6FirebirdTA00's Avatar
    Join Date
    Jan 2005
    Location
    Concord, NC
    Posts
    8,093
    A 2 bar helps, I am not sure what the MAF is doing, but it sure does jump around a lot. The issue at 4k is that it is very rich.
    Sulski Performance Tuning
    2000 WS6 M6 - LS6 (long block, refreshed top end), 10.8:1 CR, 90 mm ported FAST, Exo-Skel, 227/232 cam, QTP HVMC, EWP, GMMG, 9" w/4.11s
    2018 Sierra SLT 5.3L A8 - Airaid intake tube, GM Borla catback, L86 Intake/Ported TB

  3. #43
    Tuner z06 vett's Avatar
    Join Date
    May 2008
    Location
    mobile,alabama
    Posts
    56
    what if i turn off MAF for a test ?.why so smooth at on a no load rev?
    Last edited by z06 vett; 08-10-2008 at 05:32 PM.

  4. #44
    Tuning Addict WS6FirebirdTA00's Avatar
    Join Date
    Jan 2005
    Location
    Concord, NC
    Posts
    8,093
    Don't turn off the MAF.
    Sulski Performance Tuning
    2000 WS6 M6 - LS6 (long block, refreshed top end), 10.8:1 CR, 90 mm ported FAST, Exo-Skel, 227/232 cam, QTP HVMC, EWP, GMMG, 9" w/4.11s
    2018 Sierra SLT 5.3L A8 - Airaid intake tube, GM Borla catback, L86 Intake/Ported TB

  5. #45
    Tuner z06 vett's Avatar
    Join Date
    May 2008
    Location
    mobile,alabama
    Posts
    56
    here is the latest. but it still is acting up right at 4500 when the the turbo start to spool and boost gauge is at 0. also it is throwing a p0101 code for the MAF, it is clean.
    Last edited by z06 vett; 08-10-2008 at 07:59 PM.

  6. #46
    Tuning Addict WS6FirebirdTA00's Avatar
    Join Date
    Jan 2005
    Location
    Concord, NC
    Posts
    8,093
    MAF may be going bad. From the looks of the log, I would believe there was an issue with it.

    This one is leaner where it went rich around 4k and richer in the spot where it was lean. Should start feeling better.
    Sulski Performance Tuning
    2000 WS6 M6 - LS6 (long block, refreshed top end), 10.8:1 CR, 90 mm ported FAST, Exo-Skel, 227/232 cam, QTP HVMC, EWP, GMMG, 9" w/4.11s
    2018 Sierra SLT 5.3L A8 - Airaid intake tube, GM Borla catback, L86 Intake/Ported TB

  7. #47
    Tuner z06 vett's Avatar
    Join Date
    May 2008
    Location
    mobile,alabama
    Posts
    56
    just put it in and logged it.

  8. #48
    Tuning Addict WS6FirebirdTA00's Avatar
    Join Date
    Jan 2005
    Location
    Concord, NC
    Posts
    8,093
    To get a good log, you are going to need to run the car for 15-20 minutes after it has warmed up. I may be missing something in the tune, but pulling the fuel out around 4k is not helping much. It is still pig rich.
    Sulski Performance Tuning
    2000 WS6 M6 - LS6 (long block, refreshed top end), 10.8:1 CR, 90 mm ported FAST, Exo-Skel, 227/232 cam, QTP HVMC, EWP, GMMG, 9" w/4.11s
    2018 Sierra SLT 5.3L A8 - Airaid intake tube, GM Borla catback, L86 Intake/Ported TB

  9. #49
    Tuner z06 vett's Avatar
    Join Date
    May 2008
    Location
    mobile,alabama
    Posts
    56
    ok we went out and logged agian but it was raining, so i dont know if its useless or not

  10. #50
    Tuning Addict WS6FirebirdTA00's Avatar
    Join Date
    Jan 2005
    Location
    Concord, NC
    Posts
    8,093
    That data was much better. Try this one. When it gets dry, try another log and do a pull (WOT) in a gear you can get traction from about 1500-2000 RPM up to redline if possible.
    Sulski Performance Tuning
    2000 WS6 M6 - LS6 (long block, refreshed top end), 10.8:1 CR, 90 mm ported FAST, Exo-Skel, 227/232 cam, QTP HVMC, EWP, GMMG, 9" w/4.11s
    2018 Sierra SLT 5.3L A8 - Airaid intake tube, GM Borla catback, L86 Intake/Ported TB

  11. #51
    Tuner z06 vett's Avatar
    Join Date
    May 2008
    Location
    mobile,alabama
    Posts
    56
    went out agian after it dried up. it would not go wot it would go to 4 or 5 thousand and then it would cut out, well here is the log

  12. #52
    Tuning Addict WS6FirebirdTA00's Avatar
    Join Date
    Jan 2005
    Location
    Concord, NC
    Posts
    8,093
    Sent you a PM, gonna go back on this one. Something is screwed up in there for sure. I still dont like the inconsistent MAF readings though. The injectors are getting at a very high DC at a low RPM. Either there is insufficient fueling leading us to add this fuel or there is something else we are fighting. I haven't had enough time to really get into the tune, was just going to help get the MAF in line but it is a little deeper than that.
    Sulski Performance Tuning
    2000 WS6 M6 - LS6 (long block, refreshed top end), 10.8:1 CR, 90 mm ported FAST, Exo-Skel, 227/232 cam, QTP HVMC, EWP, GMMG, 9" w/4.11s
    2018 Sierra SLT 5.3L A8 - Airaid intake tube, GM Borla catback, L86 Intake/Ported TB

  13. #53
    Tuner z06 vett's Avatar
    Join Date
    May 2008
    Location
    mobile,alabama
    Posts
    56
    we ran again today.mike as the log sent out.i wish i could help more but there is no carburetor
    talk soon mike