The problem is.. it will learn or do whatever it needs to do to get back to the desired shift time. You can trick it into shifting quick with pressure but as it learns.. it will pull the shift back.
These don't work like a 4lXX. Shift time is critical and should be your first change. I hope this makes sense.
Tuner at PCMofnc.com
Email tuning!!!, Mail order, Dyno tuning, Performance Parts, Electric Fan Kits, 4l80e swap harnesses, 6l80 -> 4l80e conversion harnesses, Installs
I took the tune down. I run the same basic tune with some minor changes in everything from lower hp 14000lb weighted vehicles to 1000hp vehicles. Didn't want it getting out so to speak. There's another guy on here with a high hp twin turbo Tahoe running my trans tune with his not having a single problem plus a few others in here. This gentlemans problem was he was running a big hp build with all of the tm still in play, which was causing enough clutch slip and wear on it's own plus the MAF was un-tuned (yes it's still used in SD tunes for torque model calcs as we've already proven in this very thread) and that threw his torque model off all leading to his 4,5,6 clutch pack being wiped out at light throttle - not enough line pressure to hold. I think with just the first torque model adjustment it helped immensely but it's already too late. Plus things aren't working right for that long then all of a sudden change without something mechanical usually being wrong.
If you like I can put your style of trans adjustments into his for him and he can see if it works? I'm not against it if you want to try it...
2010 Vette Stock Bottom LS3 - LS2 APS Twin Turbo Kit, Trick Flow Heads and Custom Cam - 12psi - 714rwhp and 820rwtq / 100hp Nitrous Shot starting at 3000 rpms - 948rwhp and 1044rwtq still on 93
2011 Vette Cam Only Internal Mod in stock LS3 -- YSI @ 18psi - 811rwhp on 93 / 926rwhp on E60 & 1008rwhp with a 50 shot of nitrous all through a 6L80
~Greg Huggins~
Remote Tuning Available at gh[email protected]
Mobile Tuning Available for North Georgia and WNC
Last edited by Alvin; 09-20-2023 at 09:07 AM.
Tuner at PCMofnc.com
Email tuning!!!, Mail order, Dyno tuning, Performance Parts, Electric Fan Kits, 4l80e swap harnesses, 6l80 -> 4l80e conversion harnesses, Installs
Respectfully, I did and I do... Granted I don't change ALL of the final shift times, but I did change all of his controllers, final desired times, pressures, fluid fills and prefills and tm settings. I've had problems doing just the "final" times in the past mainly with downshifting - did it only like that probably 5 or 7 years ago. I address a lot of it elsewhere now. If yours downshifts and everything how ever the customers want then my hats off to you.
Wow, so come back after all the post and change your wording so "I'm" to blame for his original trans burning up even though I had nothing to do with it. The childishness here is impressiveBut in post 79 you said you already fix the shift times????
Respectfully, and without the word salad. You don't know my "style of trans adjustments" I saw a clear error in what YOU posted in this thread and likely for the long term cause of his woes.
I recommend actually going back and looking at his logs. You'll see low torque and clutch slippage, but if it makes you feel better.... He did originally have longer shift times and tm still 100% stock making things worse - the more tm, the more slippage - the more wrong the torque model is - the more slippage - all comes back to things needing to be right. I took care of and am in the process of correcting all of that for this gentleman.
AND for example since you're wanting to point a finger my way and tell me I don't know what I'm talking about, in my tune for a 2-3 final desired I run .29ms at full load and from some of yours, you're running right around .2ms, but none of that really matters as the "other" adders and timing controllers still haven't been put into the equation. You do run a touch less in the inertia settings than I do as well, but again I'm addressing ALL of this elsewhere. I can set mine up to literally downshift AS the throttle is being applied if the customer so wants. You surprisingly don't run much different than I do on shift pressures - was really surprised to see that - in fact the 2-3 is within 20 to 50 kpa in nearly all places. Some of your adaptives however are jacked up substantially vs mine, but those are stock. See I address a lot in the adaptives and inertia settings sections whereas most of yours are left stock. Just seems to make them respond better IMHO. SO, you can say what you like.
Last edited by GHuggins; 09-21-2023 at 09:39 PM.
2010 Vette Stock Bottom LS3 - LS2 APS Twin Turbo Kit, Trick Flow Heads and Custom Cam - 12psi - 714rwhp and 820rwtq / 100hp Nitrous Shot starting at 3000 rpms - 948rwhp and 1044rwtq still on 93
2011 Vette Cam Only Internal Mod in stock LS3 -- YSI @ 18psi - 811rwhp on 93 / 926rwhp on E60 & 1008rwhp with a 50 shot of nitrous all through a 6L80
~Greg Huggins~
Remote Tuning Available at gh[email protected]
Mobile Tuning Available for North Georgia and WNC
Ok I have two questions. I am totally going to try the ratio math pid to see how the trans is actually slipping. Second. Hjtrbo had some sweet drawings that are probably 20 times better than mine so I wont even try lol. If a trans slip pid logs his "third Bad style." What exactly am i looking at? The shift would start as a nice plateau, so almost vertical, then horizontal, but then a ramp. What do you guys see what causes the ramp? Especially if shift times were lowered and adaptives are raised. Actually for this, even assume the torque models are half-ass within reason? Is that where you start adjusting the other bajillion tables related to shifts? I feel like I can improve with the turbine shaft speed timing, but done have a clue. Plus what is that little blip in the middle of the shift?
Last edited by ns158sl; 09-25-2023 at 08:45 PM.
Getting ready to yank the trans tonight, this is the right tow, drive, and race kit you where taking about right?Screenshot_20231013_163019_Samsung Internet.jpg
Robert Moreau
Technical Sales and Marketing Support Specialist
TransGo
2621 Merced Avenue El Monte, CA 91733 USA
Calibration | Innovation |Performance
https://transgo.com/our-products/
I am on the tech side of things and also we are the manufacturer, everything is sold by distributors and they set their own price. I guess google is your best friend. Just careful if you find a price that is much cheaper then all others, that's usually a sign that it is a counterfeit kit made overseas and then you won't even make it off the rack with that junk in there. I have not gotten any report of counterfeit TOW&PRO kit yet, but plenty of other ones so watchout. The good old when it sounds to go to be true it is usually because it is too good to be true....
Robert Moreau
Technical Sales and Marketing Support Specialist
TransGo
2621 Merced Avenue El Monte, CA 91733 USA
Calibration | Innovation |Performance
https://transgo.com/our-products/