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Thread: gen 4 maf tuning by newby

  1. #1

    gen 4 maf tuning by newby

    new to the efi tuning game. getting beat up by a 2014 camaro on what should be simple maf tune. when i make a change it overshoots by sometimes 20%. it seems like i have a decimal off or something. trying to do copy paste by special percent-half seems to do same thing. i feel like i am doing something very wrong or setup is wrong. i have re done their cheap cold air intake so it has 8 inches straight before maf, new solid elbow, new gm maf sensor. this car came to me not running bought from auction with supposedly on 22k miles. it cleary has a junkyard hi mileage engine it it. looks as if by all the other mods it had something a way more than stock in it and by all the oil everywhere it came apart.
    rays2014ss6.2maf11.hptrays20146.2ls3maf9.hpl thanks in advance for any help

  2. #2
    Advanced Tuner jsllc's Avatar
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    Sep 2015
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    Documented all over the forum. [ECM] 12303 - Injector Offset vs. Injector Temp (Rich after flash) Must be a thousand posts about it now.
    2012 ZL1 - Maggie Heartbeat, Port & Polish Heads, Custom Cam, Custom rotating assembly, steel sleeved LS9, No NOS and No water meth. 16psi
    810rwhp and 820rwtq 91 Octane 6400 rpm
    948rwhp and 951rwtq 105 Octane 6400 rpm
    999rwhp and 997rwtq on 60% Ethanol 6400 rpm

  3. #3

    Sorry

    Quote Originally Posted by jsllc View Post
    documented all over the forum. [ecm] 12303 - injector offset vs. Injector temp (rich after flash) must be a thousand posts about it now.
    thank you! I seriously spent hours looking on forumn. I however did not search for it with correct terms. Sorry!

  4. #4
    Advanced Tuner jsllc's Avatar
    Join Date
    Sep 2015
    Location
    Bozeman, MT
    Posts
    701
    2012 ZL1 - Maggie Heartbeat, Port & Polish Heads, Custom Cam, Custom rotating assembly, steel sleeved LS9, No NOS and No water meth. 16psi
    810rwhp and 820rwtq 91 Octane 6400 rpm
    948rwhp and 951rwtq 105 Octane 6400 rpm
    999rwhp and 997rwtq on 60% Ethanol 6400 rpm