LT1 - LS coilpacks - TUNING HELP
11-29-2014, 10:42 PM
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LT1 - LS coilpacks - TUNING HELP So here it is, I have an LT1 with LT4 heads/Intake and a comp cam with a LS computer from a 2003 Vette and Coilpacks. I am having several issues:
1. I cant seem to license the 03 vette pcm with HP tuners for some reason even though stating unlocked? Is there a way to know if a 99 PCM will take the harness from the 03?
2. Ive been reading alot about the codes ive had come up, Crank Relearn? CASE relearn? Anyone have experience with this or tuning in general for the LS coilpack conversion? The car just doesnt seem to want to run well AT ALL!
1. I cant seem to license the 03 vette pcm with HP tuners for some reason even though stating unlocked? Is there a way to know if a 99 PCM will take the harness from the 03?
2. Ive been reading alot about the codes ive had come up, Crank Relearn? CASE relearn? Anyone have experience with this or tuning in general for the LS coilpack conversion? The car just doesnt seem to want to run well AT ALL!
11-30-2014, 02:43 AM
#2
I'm not familiar with the 2003 Vette setup. Is it still the 0411 PCM?
The 03 harness will work with a 99 PCM as long as the red and blue connectors fit and they're pinned correctly. If you google your PCM pinouts, a bunch of helpful pictures and diagrams pop up.
Crank/CASE relearn are the same thing. It can be done with hptuners or a GMtech2. Not sure about efi live. It doesn't affect engine operation, but it does allow the PCM to detect misfires. If you have hptuners, you can send me your tune and I'll see what I can do.
The 03 harness will work with a 99 PCM as long as the red and blue connectors fit and they're pinned correctly. If you google your PCM pinouts, a bunch of helpful pictures and diagrams pop up.
Crank/CASE relearn are the same thing. It can be done with hptuners or a GMtech2. Not sure about efi live. It doesn't affect engine operation, but it does allow the PCM to detect misfires. If you have hptuners, you can send me your tune and I'll see what I can do.
11-30-2014, 02:50 PM
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I'm not familiar with the 2003 Vette setup. Is it still the 0411 PCM?
The 03 harness will work with a 99 PCM as long as the red and blue connectors fit and they're pinned correctly. If you google your PCM pinouts, a bunch of helpful pictures and diagrams pop up.
Crank/CASE relearn are the same thing. It can be done with hptuners or a GMtech2. Not sure about efi live. It doesn't affect engine operation, but it does allow the PCM to detect misfires. If you have hptuners, you can send me your tune and I'll see what I can do.
The 03 harness will work with a 99 PCM as long as the red and blue connectors fit and they're pinned correctly. If you google your PCM pinouts, a bunch of helpful pictures and diagrams pop up.
Crank/CASE relearn are the same thing. It can be done with hptuners or a GMtech2. Not sure about efi live. It doesn't affect engine operation, but it does allow the PCM to detect misfires. If you have hptuners, you can send me your tune and I'll see what I can do.
I will work on sending the tune....Thanks