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    E85 Air fuel at WOT

    I'm more or less a basic tuner, nothing special. As of now my car has been converted to a E85 fuel setup from gas. Engine is a 3800SC with a small pulley, cam, and bigger injectors of course for...
  2. Completely understand. I know you are trying to...

    Completely understand. I know you are trying to help me. I'm just confused why it won't shift at all at WOT. What mph and rpm should it be at you think? I was hoping I would at least have a...
  3. Here is the VCM scan showing 6700 and 53mph on...

    Here is the VCM scan showing 6700 and 53mph on the scan we took. That's where I got that from.
  4. Did you see the VCM scan I have showing 6700 is...

    Did you see the VCM scan I have showing 6700 is around 53mph from when we did a few test runs? I'm just curious on how much lower it needs to be, etc.

    Do I need to update all part throttle shift,...
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    2007 Silverado 4L80 - shift issues

    Ok got a 2008 Express Van TCM tune. Imported it and it worked. Now the issue is getting the truck to shift. Can you look at the log and tune file and see why it is shifting so high and not going into...
  6. Ok got a 2008 Express Van TCM tune. Imported it...

    Ok got a 2008 Express Van TCM tune. Imported it and it worked. Now the issue is getting the truck to shift. Can you look at the log and tune file and see why it is shifting so high and not going...
  7. That's my issue. How do I figure out which one...

    That's my issue. How do I figure out which one is the happy one to use? If I use the one that works for the speedo, then I get the 0700 error code. If I get rid of the error code with the other...
  8. Also is there specific positioning to the ISS and...

    Also is there specific positioning to the ISS and OSS as long as they are plugging the hole?
  9. Why would one TCM program show mph and one would...

    Why would one TCM program show mph and one would not? I guess I'm baffled how that can be possible to do that and then show the Transmission code errors.
  10. I didn't settle on the Yukon OS. The OS should...

    I didn't settle on the Yukon OS. The OS should be for a 07 Silverado. Is it not? The TCM was just sent a new one that is only for the 4L60 but was not programmed for the 4L80 I believe. I'm so...
  11. blindsquirrel - The transmission in this truck is...

    blindsquirrel - The transmission in this truck is a 06 Chevy Express Van. Does that make a difference?
  12. I'm helping a buddy out do all this on his truck,...

    I'm helping a buddy out do all this on his truck, but I can't figure out why I can't get a reading and the truck won't shift right.
  13. I'm just confused how one tune can show the mph...

    I'm just confused how one tune can show the mph on the scanner and then one can't? One will flash the 0700 code but then the other won't but won't show mph. What gives? Speedometer on dash works,...
  14. Does anyone have the right TCM to use? I did a...

    Does anyone have the right TCM to use? I did a write entire on the TCM that was supposedly flashed for the 4L80. What should I use? A 4L60 transmission TCM off a 07 Suburban?
  15. https://www.ictbillet.com/transmission-wire-adapte...

    https://www.ictbillet.com/transmission-wire-adapter-harness-4l60e-to-4l80e-18-with-vss-ls1-lm7-lq4-5-3.html
  16. It is the ICT Billet 60E to 80E harness.

    It is the ICT Billet 60E to 80E harness.
  17. 4L60 to 4L80 transmission issue on 2007 Silverado with 6.0L

    Having an issue with getting my speedometer to read on the HP Tuners scan. Swapped a 4L60 to 4L80. Got the conversion harness and trying to go into do a scan and have the MPH show 0. Transmission...
  18. If I download the 07 Suburban file, will it...

    If I download the 07 Suburban file, will it change the engine parameters too? The reason I ask, is this truck has a large custom camshaft and was tuned to run a lot different than a stock one. This...
  19. Any help on this? Someone has to be able to do...

    Any help on this? Someone has to be able to do the segment swap and get this back over to us. Please let me know. I will pay someone to make this work!
  20. Do you have a file I can use? I can't find in...

    Do you have a file I can use? I can't find in the repository.
  21. 2007 Chevy Silverado with a 6.0L V8 and 4L80 Transmission - tune help

    My buddy just recently swapped his 2007 Silverado to a 6.0L V8. He had the original 4L60 but it gave up and he swapped in a 4L80 transmission. I need help doing the tuning for the transmission. Is...
  22. 2007 Chevy Silverado with a 6.0L V8 and 4L80 Transmission - tune help

    My buddy just recently swapped his 2007 Silverado to a 6.0L V8. He had the original 4L60 but it gave up and he swapped in a 4L80 transmission. I need help doing the tuning for the transmission. Is...
  23. What is the easiest way to lower the idle from...

    What is the easiest way to lower the idle from where it is at right now? Right now it is steady at 950-1000rpm. Trying to get it closer to 800 or so. If anyone can take a peek at the tune I posted...
  24. 6.0LS Engine Idle Issue - 2007 Chevy Silverado

    My buddy just got done installing a 6.0 LS engine with a large cam. Cam specs are: BTR Stage 4 Truck Cam - .553/.553 with 109 lob separation angle. We had a few dyno runs on the truck a few weeks...
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    P0730 Incorrect Gear Ratio Code

    I am trying to figure out this code. Had this before on my old 3800SC setup on my 88 Fiero. Well I now have another 88 Fiero with a 3800SC with the 4t65eHD transmission. Transmission code is 2FCB....
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