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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03-03-2018
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?
03-03-2018
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.
03-03-2018
I tend to agree with this. Essentially a Case learn is the same as what it sounds like you already had done.Originally Posted by wstefan20
03-03-2018
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.
03-05-2018
I got it done today by my mechanic. Will update on change of mileage.
03-09-2018
Any improvement or not enough miles to tell?
03-10-2018
Not yet. Computer shows 22.5 so far. I'm running half 93 octane half 87 to get to near 91
03-19-2018
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.
03-26-2018
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.
04-22-2018
Yes I can.
07-09-2019
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
07-10-2019
confirming aeroforce can do case relearn did it a few times after tunes and different PCMs
08-14-2019
I got a Tech 2 now so I can do them whenever and did when I installed a ZZP PCM on my 2005.
08-15-2019
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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