Yep your right...Originally Posted by RedHeartbeat
My bad...I kinda half read through what he was talking about...
Yep your right...
My bad...I kinda half read through what he was talking about...
T-RAV99 GMC | 5.3 | Skinny White Guy Tuned
probably not, he let it go for like a month or more and its been gradually getting worse.
01 GMC sclb d-max 2wd.
2.2 60' 8.9 1/8th
can someone answer me this.....why do i hear about crank relearn alot of times all with other tuners touching PCMs?
just curious cause ive swapped Pcms in many vehicles and have tuned my truck plenty of times and never had this problem.
ive used my pcm in other vehicles and never had an issue...Im just curious to this as why this occurs
2002 Lightning - GT headed 5.5Litre w/ Twin 7665s
2002 Silverado - 427Lsx w/ Twin gt4202s
2010 Silverado crewcab Z71 - 5.3litre w/ procharger
2000 Wrangler - 5.3litre with some stance
2014 Xsport- 3.5 Eco boost
412 Motorsports
it ain't that I'm too big to listen to the rumors, It's just that I'm too damn big to pay attention to 'em..That's the difference
i thought it just happens after a cam swap...
01 GMC sclb d-max 2wd.
2.2 60' 8.9 1/8th
PCMs are reloaded with a completely new operating system install(flash), never been on a vehicle since loading the operating system. Its like installing a brand new PCM on a vehicle. It has to be syncronized once and then its golden until the PCM is wiped clean and another operating system is loaded.
See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709
why would you switch the os though? i know there are some custom os available but i thought they are mainly for ease of tuning with boost.
01 GMC sclb d-max 2wd.
2.2 60' 8.9 1/8th
when you order a PCM you get a replacement PCM tuned with an updated program for your vehicle. Say you have a 411 PCM, they have a pile of them they use to program and performance tune for your vehicle. There is no telling what the PCM came out of. It may be a V6, V8, van, truck, car... so the operating system is loaded. It would be different if you were there and he could tune on your pcm or you had HPTuners software and you could download your tune to your PC and then send it to him for updates and then you reload. No issues then.
See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709
so what your saying is cause they arent the OEM pcm it has this issue then?
now answer me this...why can i take my pcm from my truck and install it in another given vehicle and it runs with no crank relearn?
2002 Lightning - GT headed 5.5Litre w/ Twin 7665s
2002 Silverado - 427Lsx w/ Twin gt4202s
2010 Silverado crewcab Z71 - 5.3litre w/ procharger
2000 Wrangler - 5.3litre with some stance
2014 Xsport- 3.5 Eco boost
412 Motorsports
it ain't that I'm too big to listen to the rumors, It's just that I'm too damn big to pay attention to 'em..That's the difference
because it has had a case learn cycle done on it in its past. It thinks its still in the same truck, bubble memory. The odd thing is not all new pcms need it done. I guess it has something to do with data without acceptable parameters in the base GM tune vs things outside the limit.
Last edited by RedHeartbeat; 01-28-2009 at 01:02 AM.
See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709
i wonder if it has to do with how some "tuners" set the pcm's up
i took a 00 2500 computer and rewrote it for a 99 fbody and had no issues with it. wouldnt that be the same as you been trying to speak on?
2002 Lightning - GT headed 5.5Litre w/ Twin 7665s
2002 Silverado - 427Lsx w/ Twin gt4202s
2010 Silverado crewcab Z71 - 5.3litre w/ procharger
2000 Wrangler - 5.3litre with some stance
2014 Xsport- 3.5 Eco boost
412 Motorsports
it ain't that I'm too big to listen to the rumors, It's just that I'm too damn big to pay attention to 'em..That's the difference
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