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View Full Version : looking for nv4500/6.0 tune for 1mb pcm



akafred
June 9th, 2017, 12:31 AM
I put a nv4500 (5 speed) and 6.0 from a silverado in my jeep, its running with a hacked together 6.0/4l80 and 4.8/5spd tune. it all works but i am getting some stalling when shifting/stopping. i have been comparing some manual/auto tunes and have an idea on what to change but starting with the correct tune for the drive train will be 1000% easier..

ScarabEpic22
June 9th, 2017, 04:59 AM
Put a 6.0/manual tune in the PCM and start with that. Finding a 5MT trans segment might be tough and you have to go with a 6MT from like a Vette then change the ratios.

akafred
June 10th, 2017, 02:37 AM
i am looking for factory 5mt / 6.0 truck tune, they exist, this drive train came from one of those vehicles.

ScarabEpic22
June 11th, 2017, 01:33 AM
Post your file up, sounds like you need to do a RAFIG process and dial the idle airflow in. Start with the tutorial on this forum and copy the values from a 5MT tune as a baseline.

What year/OS are you running?

If this doesnt work, worst case you could get a VIN from a truck that has the engine/trans setup you want and find someone to flash it with GM SPS and read it out.

Jim_PA
June 13th, 2017, 12:24 AM
I'm pretty sure I have one for an '03 -- Just have to get to it.

joecar
June 13th, 2017, 07:03 AM
Keep in mind that with the MT tune the CPP (clutch pedal position) switch selects the P/N or IG idle airflow tables, so you have to tune both (RAFIG and RAFPN) as Erik said.

ProperTuningOG
June 13th, 2017, 08:41 AM
Here's your unicorn. :banana:

21181

Jim_PA
June 13th, 2017, 12:42 PM
Here's another in BIN format -- not really sure where it specifies auto/manual. Wouldn't mind knowing!21182