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Type: Posts; User: hivoltagedriver

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  1. Replies
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    It sounds like you COULD have an internal...

    It sounds like you COULD have an internal hardware issue of some sort in the transmission.
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    That looks better. How does it run with that...

    That looks better. How does it run with that tune? Also, are you reconnecting and re-enabling your MAF?

    Also, if you want it to drive way better, on the shift scheduling copy the upshift table...
  3. I had read through that already, but didn't...

    I had read through that already, but didn't understand it entirely. It looks like HP tuners will allow me to write the OS from the 6.2 truck to his 4.3 E92 ECM? Or am I misunderstanding that? If...
  4. He insists on having the VIN match the truck on...

    He insists on having the VIN match the truck on the ECM, TCM, and all body modules so that he doesn't run into some perceived problems later.
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    It looks like they have all of the pressures and...

    It looks like they have all of the pressures and volumes cranked WAY up, and all of the TM turned off. You want the shifts to happen quick, and need enough pressure to make that happen, but not so...
  6. There are adder tables that add airflow when the...

    There are adder tables that add airflow when the AC is turned on to compensate for the added load on the engine. I believe that you will need to make changes under the Effective area section for...
  7. 2017 GM truck, complete powertrain swap questions

    OK, long story short: I have been asked to take care of any tuning necessary for this swap. He has a 2017 Silverado 4.3L/ 6spd RCSB truck that he wants to swap the entire drivetrain out of a 2017...
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    3,124

    Even if you sent the ECM off for a base tune, it...

    Even if you sent the ECM off for a base tune, it would still need to be dialed in once the truck was back on the road. A mail order tune CAN get you close, but it won't be perfect. You need to log...
  9. Any time that I have disabled VATS on a vehicle,...

    Any time that I have disabled VATS on a vehicle, the light on the dash did not come on. Not sure on a 2009 Cobalt, but I would assume it would be the same.
  10. I set everything to 160mph on our 2017, and it...

    I set everything to 160mph on our 2017, and it worked fine. Don't max out the tables or you may get a reduced engine power warning at start up.

    This particular truck will hit the cut-off just...
  11. It looks like you have TCC disabled on 1-4, and...

    It looks like you have TCC disabled on 1-4, and not locking in 5th or 6th until around 55mph (with your 6th lock up slightly lower than your 5th gear). Depending on the cam and rpm you are turning...
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    Watching this. I know there was a TSB for a...

    Watching this. I know there was a TSB for a fluid change. I need to get that done, but I am experiencing the same issue with our new to us 2017 Sierra with the 8L90. Haven't got into the trans...
  13. Check all the basics. Make sure you are using...

    Check all the basics. Make sure you are using good fuel, maybe one step colder plugs (TR6), and check fuel pressure. Does it have headers on it? Cats?
  14. This has been one of my biggest complaints so far...

    This has been one of my biggest complaints so far as well. I just flat don't have internet everywhere I tune.
  15. Just ran into this for the first time on the...

    Just ran into this for the first time on the wife's new-to-her 2017 Sierra. What a PITA!
  16. I've been tuning with HPT for years now, but all...

    I've been tuning with HPT for years now, but all of these new changes are about to wear me out. I am VERY often not around internet when I am tuning, and this is a huge pain in the ass. This new...
  17. pretty sure the ZL1 has a 6L90... I wouldn't do...

    pretty sure the ZL1 has a 6L90... I wouldn't do a direct copy, but you could download a stock ZL1 tune file from the repository and compare that to what you have to give you a better idea of what...
  18. The Diablosport tuner has VERY limited...

    The Diablosport tuner has VERY limited functionality when it comes to tuning the 6L80. If you want t good transmission tune, get HP Tuners and learn how to use it, or pay someone who knows how to...
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    I do know this much: You can't just run an OS...

    I do know this much: You can't just run an OS (tune) from a manual GXP on an '08 or '09 GT. There are some distinct differences in the 2009.5 OS. I think you may be better off trying to segment...
  20. I don't have a scroll to the right option. ...

    I don't have a scroll to the right option. Really about to give up on HPT with all the changes. How the hell do you change the whole website, breaking all the old links in the process after years...
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    42" tires on LS3 swap JK

    I am finishing a tune on a Maggie'd LS3/ 6L80 swapped JK. It is lifted on 42" tires, and I am running into a limitation of only being able to tune for a max of 40" tires. It is causing some random...
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    I do all of my MAF tuning on the street. Just...

    I do all of my MAF tuning on the street. Just make sure you get enough drive time in to get a good data sample. I usually log for 10-15 minutes before making changes. I try to stay out of PE, and...
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    First, don't just flash your ECM with a GXP file...

    First, don't just flash your ECM with a GXP file that you downloaded. Second, the 09.5 (all GXPs) had a different OS than the 08-09, and some of it is not interchangeable. They use different...
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    I'm running the LSA injectors in my G8 with no...

    I'm running the LSA injectors in my G8 with no problems. Currently has a 428 LSX making around 640hp, and I'm logging less than 80% IDC. Stock (ported) LS3 intake and fuel rails. It is NA though. ...
  25. I set my WOT shift rpm where I want it to shift,...

    I set my WOT shift rpm where I want it to shift, and dial in the mph to make it happen. I can tell you that you are commanding too high of a mph to make it shift right with those gears. If I...
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