G8 GT 6l80e help

I'm semi new to HP Tuners and just had a FTI triple disc 2800-3200 Stall torque converter installed and have been having trouble with either my downshift around 40-45mph or my torque converter locking/unlocking around those speeds, one of these things is causing a really harsh jolt during deceleration through the mentioned speeds. Ill post my tune file. Any help will be greatly appreciated.Attachment 85264

I’m mobile at the moment but I can look at the file when I get home

Thanks. Let me know if you need more info

Seperate your lock and unlock speeds for 5th and 6th gear. Stock my car did this because the lock/unlock speeds are both set at 42mph

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Originally Posted by wa04compg

Seperate your lock and unlock speeds for 5th and 6th gear. Stock my car did this because the lock/unlock speeds are both set at 42mph

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not sure of a way to post screenshots onto this forum, but i changed the 6th lock and unlock 2% higher. Would this be enough?

Set your shift speed normal 5th 2mph higher then the apply release for tcc and try 1 mph higher for the normal 6th shift speed above your normal 6th tcc

have you tuned this or a shop?

For 6th set the 0% apply to 53 and the release to 50. Interpolate or manually smooth it out into the higher % throttle

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Originally Posted by G8NOOBIE

have you tuned this or a shop?

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Mixture of both myself and another person, the other person is a much more skilled tuner than myself. Why?

Just asking. What all is done to it? There’s certain things I would personally change but depends on mods

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Originally Posted by G8NOOBIE

Set your shift speed normal 5th 2mph higher then the apply release for tcc and try 1 mph higher for the normal 6th shift speed above your normal 6th tcc

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Quote:

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Originally Posted by wa04compg

For 6th set the 0% apply to 53 and the release to 50. Interpolate or manually smooth it out into the higher % throttle

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Is this kind of what you are talking about? SeeAttachment 85267 attached tune file

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Originally Posted by G8NOOBIE

Just asking. What all is done to it? There’s certain things I would personally change but depends on mods

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So for mods, all i really have is CAI, muffler delete (previous owner), DOD delete, and Duration [email protected] Lift .595" cam. What do you see that can be changed?

Sent you a pm

open your normal and pattern A part throttle shift schedule table next to its respective normal and pattern A TCC apply and release table.

referencing your first posted file and the "normal" tables your TCC clutch is literally releasing in 4th 1 single MPH before the downshift is being requested. you need more margin than that. 1 MPH isn't enough time to disengage the clutch completely before the downshift commences, especially if you're on the brakes coming up to a stop.

attached is a stock 6L80E file. compare the shift tables to the TCC apply and release tables and take note of how much margin (time) there is between commanding the events.Attachment 85273

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Originally Posted by lukearmstrong1990

open your normal and pattern A part throttle shift schedule table next to its respective normal and pattern A TCC apply and release table.

referencing your first posted file and the "normal" tables your TCC clutch is literally releasing in 4th 1 single MPH before the downshift is being requested. you need more margin than that. 1 MPH isn't enough time to disengage the clutch completely before the downshift commences, especially if you're on the brakes coming up to a stop.

attached is a stock 6L80E file. compare the shift tables to the TCC apply and release tables and take note of how much margin (time) there is between commanding the events.Attachment 85273

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Okay, and that leads me into another question. What does pattern A do and when does it take effect? My pattern B is just zeroed out.

Usually pattern a is for sport mode. No idea what pattern b does but I just leave mine zeroed out

Attachment 85289 How does this look?

Nate, Did you use the bluecat tuning table? If not, it's a lifesaver

For my L77 Holden (ChevSS) my Pattern A is for Cruise-Control and Pattern B is for Sport.
Given the variations, it's probably best to scan TransShiftMode^ to see when the various pattern modes occur.

^ : in 4.0.12 of the Scanner (the latest that I know of), Trans Shift Mode gets shown as Unknown:14200 in the PID list, but works ok, but you can't find/add this PID with this version of Scanner. Beta 4.1.331 seems ok.
Edit#2: Huh, 4.2.1 is available now and it's ok.