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Old 07-15-2009, 01:19 PM   #1
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6l80e stall tune

what is everyone doing to keep there new stall converter alive, seeing that non of the aftermrket converters are designed for pwm tcc or wot tcc apply

i have a large trans cooler and i have all wot tcc off, all tm off, and only have the tcc on at hwy speeds in 5th and 6th gears
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Old 07-16-2009, 01:55 PM   #2
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I will have to look at my efi live to see, but we added a binch of pressure I believe on the lock up in 5th and 6th just in case. Can't remember now..

what did you dyno at with the stall?? or didn't you yet?

I can check my files later for you.
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Old 07-17-2009, 03:22 PM   #3
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no numbers yet, it is getting a custom stainless X-pipe right now, if you can see what efi live has for tcc pressure tables and tcc lock up tables and switches and post them that would be great
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Old 07-17-2009, 08:53 PM   #4
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ok.. have to get it off my laptop ,will tomorrow hopefully.
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Old 07-17-2009, 10:37 PM   #5
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Quote:
Originally Posted by DanD View Post
I will have to look at my efi live to see, but we added a binch of pressure I believe on the lock up in 5th and 6th just in case. Can't remember now..

what did you dyno at with the stall?? or didn't you yet?

I can check my files later for you.
Dan
I just bought EFI Live. Could you please send me you calibrations curves so I have a basline. Thanks
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Old 07-19-2009, 02:11 PM   #6
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Now - I can see how locking-up the converter will make the tranny more efficient at WOT, but I remember reading articles where locking the converter pulled the engine back down out of the powerband. I never locked the converter at WOT and still found high trap speeds (which I always saw as better efficiency) at the end of the track. I do know that Yank didn't recommend locking this converter at the track unless I upgraded to multi-discs but I always managed to keep my shift extension right around peak power, at about 5300-5400 RPMs.

Are you guys with the 6L80s locking then, and have you made sure it's okay with your converter manufacturer? Just curious
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Old 07-19-2009, 03:00 PM   #7
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only locking mine at hwy speeds in 5th and 6th, no wot lock up,

the factory tune has the converter locked 2nd gear and up at wot, and had the trans in 5th gear by 30 mph and the lock up on
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Old 07-25-2009, 06:28 AM   #8
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IMHO, locking the factory coverter at WOT is asking for a very short lifespan for it. There aren't very many performance converters that are approved for WOT locking...vig's triple disc is one of the few that you can lock at WOT....you have to find the sweet spot for locking...to low rpm in a gear and you'll drop out of the power band and lose ET/mph, too high and you wont' take advantage of the mph gain...locking at WOT is really only gonna gain you MPH in the 1/4...also good for roll racing. I had heard prematurely that there were tuning issues with stall converters on the 6L80...I haven't researched the issue much, and since I don't have a stall yet, I have no personal experience. Just that when cruising people were having trouble keeping them locked (I believe), such that they would go in and out of lock.

How are your guys 6L80's with converters doing? How much mpg did you give up with them?
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Old 07-25-2009, 01:40 PM   #9
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so far 1500 miles on mine and it stays locked up at hwy speeds just fine, all wot tcc turned off
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Old 07-25-2009, 08:30 PM   #10
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mine seems ok as well.. I only have 1 slight issue, and not sure if its just the lock up, or maybe the air/fuel (idle air) that it seems to surge a little bit when locked. I will have to mess with it to see.
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Old 08-25-2009, 03:39 PM   #11
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Probably the AFM kicking on and off.
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Old 09-05-2009, 11:38 PM   #12
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Something you can not see in the software is the PWM(Pulse Width Modulated) function of the lock up clutch, it will lock up in a percentage based on throttle percentage ETC., at 0 percent throttle the converter will reduce the percentage of lock up, and as you slightly accelerate(up to maybe 25%) the lock up disc will engage at a greater percentage to try to maintain the same feelingsmoother feeling in the disc locking up, in how much lock up percentage is occuring, the problem is when you change the stall speed this no longer matches the shaft speeds so it will tend to bounce the rpms around more, and we can not access this with tuning software currently.
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Old 09-08-2009, 12:04 AM   #13
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I have seen folks at hptuners talking about the pulse width modulation in their G8s and making successful changes. Is this just a software file recognition issue or is the PWM a hidden file in the ECM? I hope this gets figured out due to the significance of the need to adjust for the use of a stall with big cams and such.
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Old 09-25-2011, 09:08 AM   #14
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Quote:
Originally Posted by camaro1 View Post
no numbers yet, it is getting a custom stainless X-pipe right now, if you can see what efi live has for tcc pressure tables and tcc lock up tables and switches and post them that would be great
Sorry to bring up an old thread, but did anyone get any resolve on this? I've got a built 6l80e with a 3k stall. Shifts a bit funny and when I'm off gas the RPMS dip down to about 1k. It just seems its having a hard time finding a gear at normal drive. And a bit sluggish at WOT.
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Old 09-25-2011, 09:17 AM   #15
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Sorry to bring up an old thread, but did anyone get any resolve on this? I've got a built 6l80e with a 3k stall. Shifts a bit funny and when I'm off gas the RPMS dip down to about 1k. It just seems its having a hard time finding a gear at normal drive. And a bit sluggish at WOT.

Have you tried asking Ted about this? My car has been stalled for a year and a half now and I don't have any of the issues mentioned here. Actually, my bone stock 6L80E has been flawless.
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Old 09-25-2011, 10:08 AM   #16
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it's in the tune
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Old 09-25-2011, 02:52 PM   #17
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Not sure what converters your talking about, but all of the major brands lock-ups are great on the highway when locked up and the RX/FTI will act near stock when driven easy (wives usually dont even notice unless they stomp on it). Have yet to have a failure with these to date either. A good trans tune is highly reccomended though.
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Old 09-25-2011, 04:24 PM   #18
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it's in the tune
I agree...

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Old 09-25-2011, 05:46 PM   #19
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Not sure what converters your talking about, but all of the major brands lock-ups are great on the highway when locked up and the RX/FTI will act near stock when driven easy (wives usually dont even notice unless they stomp on it). Have yet to have a failure with these to date either. A good trans tune is highly reccomended though.
I've got a TCI.. (ya, ya, I know, I know FTI is better) I actually have an FTI SRL that I've been trying to sell for the past month.
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Old 09-25-2011, 06:38 PM   #20
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Livernois did mine and tune and its super!
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