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Thread: LQ4 GT45 fall on face hard

  1. #21
    Tuning Addict blindsquirrel's Avatar
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    With a referenced reg, the pressure with the hose connected depends on how much vacuum it's seeing, so pressure diagnosis has to be with the hose off. With the hose on you can't know if it's the right pressure or not unless you're also measuring vacuum at the same time and plotting them next to each other. Pressure with everything hooked up and under load or under boost comes later.
    GM Gen4 Injectors v2.1.xls
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  2. #22
    Tuning Addict blindsquirrel's Avatar
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    What's with the O2 sensors? If they aren't plugged in they should both read ~450mV all the time. If plugged in, lower than that means lean or short to ground. The highest I see in that log at any point is 150mV.
    GM Gen4 Injectors v2.1.xls
    "My life has become a single, ongoing revelation that I haven't been cynical enough."
    Funny how accounts marked as 'banned' are still able to log in and do stuff on the site, huh?

  3. #23
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    they are both plugged in one is in the exhaust pipe coming off the drivers side header the other one is accross from it on the pass side do i need to hook up the upstream ones or downstream o2s

  4. #24
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    i think im following you i do know that i was fighting water in the tank and it stopped my injectors from working so until i figured that out i was only firing on 5 injectors witch is why i changed to decaps bc i couldnt afford another set of injectors yet lol

  5. #25
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    Upstream.

    Put Fuel>Oxygen Sensors>Integral Delay>Airflow Mode back to stock. Same for >Closed Loop Enable ECT vs. IAT. >Rich/Lean vs. Airflow B1 and B2 to 450mV.

  6. #26
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    so bank 1 and bank 2 450 accross the table?

  7. #27
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    Yes, and the other settings mentioned. Relog.

  8. #28
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    10-4 doing it now thank you

  9. #29
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    ok sorry my internet went out the past day or so, with these adjustments its running and was able to make a pass here is the logs thank you



    pass with adjustments.hpl
    speed den _WLM_Revised_rev4_Map2bar1siriussujustments.hpt

  10. #30
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    Looks like you're getting somewhere. Here's this if you want. VCM Scanner>Vehicle Controls & Special functions to clear LTFT's.

  11. #31
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    Quote Originally Posted by SiriusC1024 View Post
    Looks like you're getting somewhere. Here's this if you want. VCM Scanner>Vehicle Controls & Special functions to clear LTFT's.
    yes sir thank you for your help!! still not building boost but im thinkin i have the waste gate not exactly right

  12. #32
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    2nd run ltft relearn.hpl

    here is the log after clearing ltft its running way better still not building boost though

  13. #33
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    Try again, but I think there's something going on. Clear LTFT's. Add Knock Retard to the logs.

  14. #34
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    Quote Originally Posted by SiriusC1024 View Post
    Try again, but I think there's something going on. Clear LTFT's. Add Knock Retard to the logs.
    did you adjust the tune? do i need to flash that? sorry ive had a ruff couple of days so i second guess myself

  15. #35
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    Yes and yes.

  16. #36
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    passwithsirisadjustments2.hpl
    passwith3rdadjustments.hpl the other day i think i sent wrong file so here is the 2nd and 3rd runs