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Why not just put a non flex fpr and run 58 psi? Is that not an option?

Drill the front side of the iac passage. Enlarge the hole. it'll be quiet

What year truck? If its not a 03-04 then you wont have an ac pressure switch to turn the fans on.

Thanks! This makes sense. I have taken away some timing and added air as per an earlier post. I need to post the latest tune. Removing timing along with tuning the iac for the newer throttle body...

Getting better. Still wants to act up after a 30 or so minute hot start.

Will look into this. Thanks! It?s acting much better since tuning the iac. Don?t guess I realized how far off it was.

12882 table is stock. 12881 I adjusted trying to see if it would make a difference. did not so I put it back stock. I also adjusted 12880 table but had to go opposite of what I thought to make a...

Can anyone shed some light on why its commanding the iac to close when it commands the ac on? Doesn't always do it. mostly it works flawless. Seem to be only after a hot soak. Will act up after its...

If that screenshot is accurate for your fuel trims then you really need to get your VE and MAF straight first.

Yes. Found a thread that explains it pretty good. Figured I'd share it here for future finds.
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Can't get this figured out. Doesn"t do it all the time. Sometimes at idle when the ac kicks on it'll stumble and/or die. Usually the stall saver will catch it, but then it just continues to cycle the...

53437

Tune Added

tcm does not store the vin. install new trans. do a write entire of the old file in with the replacement trans in and move on with life.

had a buddy come by with and help me out. only issue I have now is the tcc locks as soon as it hits second and stays locked through the shifts. cant figure this part out. most of the issues were...

Does the 12v direct wiring harness have a separate relay? If so its probably taking longer to power down and that's why it's running on.

24x. 05 computer. It runs but I'm getting a p2138. Pretty sure it's a wiring issue. More concerned with how to make the 4l80 play nice.

Had a buddy bring me a 07 tbss. Has a 05 v8 trailblazer e40 ECM and t42 controller. Lq4 and 4l80 out of a van. 24x reluctor. Anyone able to help me get this thing going? Trans side specifically. Any...

found one!!!

anyone have a 80e file for operating system 12593058? couldn't find one in the repository. thanks!

Make sure the convertor is unlocked at wot. What are you shifting it at? Must be low if the rpm's are dropping that low. Up the shift point.

The lifters will stay up in the trays. Or use some wooden dowel rods. 6.2 truck doesn't have dod. Or at least mine didn't. Cam has about 20k miles on it. Looks new. Email me and I'll send you some...

If you're swapping into a dod truck then you need to pull the heads to swap the lifters. If non-dod then no need to pull heads. I have a ls9 cam and a ls2 timing cover for sell if you haven't bought...

Doesn't go to sd until the light is triggered.

Read the help file and do exactly what it says. I've fought one before too.

That's what it reads when the circuit is open. Make sure your wiring is correct.