Thread: Case relearn Houston

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  1. #1 Case relearn Houston 
    GT Level Member mainecrab's Avatar
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    Anyone have a capable device? I bought a ZZP tuned PCM and it runs great but mileage is suffering. It doesn't as well before I had a relearn done after a crank sensor change. Anyone can help in Houston?
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  3. #2 Re: Case relearn Houston 
    GTX Level Member wstefan20's Avatar
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    The case learn will not fix the gas mileage issue, that's due to the tune. I've swapped plenty of engines and crank sensors without doing case learns and they all ran fine. It's probably the tune.
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  4. #3 Re: Case relearn Houston 
    GTP Level Member LeadfootCJ7's Avatar
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    Quote Originally Posted by wstefan20 View Post
    The case learn will not fix the gas mileage issue, that's due to the tune. I've swapped plenty of engines and crank sensors without doing case learns and they all ran fine. It's probably the tune.
    I tend to agree with this. Essentially a Case learn is the same as what it sounds like you already had done.
    2007 Grand Prix GXP;2002 Camaro Z28 - tune, CAI, and exhaust
    2006 GMC 2500HD - ATS high flow manifolds and uppipes, turbo back exhaust, blocked EGR, Denali headlights, Reflexxion Cown Hood
    1994 Olds Cutlass Supreme 2 door
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  5. #4 Re: Case relearn Houston 
    The Boss Iceman6669's Avatar
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    Im fairly certain that if you need a case learn it would throw a code.... But I have done them before with DHP tuners. Also think MAYBE an areoforce can do it also.
    97 GTP Sold-prolly rusted away by now

    Too Hot to Handle, Too Cold to Hold
    Ice is now an Admin
    And I'm ready to roll
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  6. #5 Re: Case relearn Houston 
    GT Level Member mainecrab's Avatar
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    I got it done today by my mechanic. Will update on change of mileage.
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  7. #6 Re: Case relearn Houston 
    GTP Level Member LeadfootCJ7's Avatar
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    Any improvement or not enough miles to tell?
    2007 Grand Prix GXP;2002 Camaro Z28 - tune, CAI, and exhaust
    2006 GMC 2500HD - ATS high flow manifolds and uppipes, turbo back exhaust, blocked EGR, Denali headlights, Reflexxion Cown Hood
    1994 Olds Cutlass Supreme 2 door
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  8. #7 Re: Case relearn Houston 
    GT Level Member mainecrab's Avatar
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    Not yet. Computer shows 22.5 so far. I'm running half 93 octane half 87 to get to near 91
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  9. #8 Re: Case relearn Houston 
    GT Level Member mainecrab's Avatar
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    No real improvement yet about 25mpg. The computer still says about 22.8 though. I filled with 93 octane and will see it that has any effect. It did seem peppier than before but could be wishful thinking.
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  10. #9 Re: Case relearn Houston 
    GT Level Member mainecrab's Avatar
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    Looks like it is going to stick around 22-25 MPG depending on how it is driven. The cluster MPG average doesn't seem to reflect the actual MPG though.
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  11. #10 Re: Case relearn Houston 
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    Yes I can.
    An engine is an engine no matter the size.... I think Dr. Seuss said that... or maybe it was Big Weld....
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  12. #11 Re: Case relearn Houston 
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    04+ GP’s won’t always throw a code when they need a CASE relearn. I learned that after changing the balancer and about 3 months later the thing started with slight misfires, that would kick off the cruise control, then progressed to the point where it would miss under heavy throttle then got to the point where it was missing all the time. The whole time I went through the plugs wires and coil packs. Finally just did a CASE relearn and it cleared ALL the misfires away.

    Jeff
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  13. #12 Re: Case relearn Houston 
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    Quote Originally Posted by Iceman6669 View Post
    Im fairly certain that if you need a case learn it would throw a code.... But I have done them before with DHP tuners. Also think MAYBE an areoforce can do it also.
    confirming aeroforce can do case relearn did it a few times after tunes and different PCMs
    2004 gtp SD headers, e85, #60 injectors, Walbroh 255lph, junkyard custom fender well intake, lq4 MAF, 3.1 Pulley, 1.95 rockers, l76 springs, shift kit and tranny cooler
    BMR trailing and rear control arms, zzp STB's, tubular control arms, Dorman and Addoco sway bars, intense coilovers, poly bushings and mounts.
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  14. #13 Re: Case relearn Houston 
    GT Level Member mainecrab's Avatar
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    I got a Tech 2 now so I can do them whenever and did when I installed a ZZP PCM on my 2005.
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  15. #14 Re: Case relearn Houston 
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    Man you are doing way better than me, must be a lot of highway driving. I couldn’t get better than 26.1 freeway and 17.1 for my normal back and forth to work on gas.
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