What is a good tune to avoid burning transmission's.
What is a good tune to avoid burning transmission's.
If you have a stock transmission, I have the guide from the tuning school that has a good tune in it. Since I modded my transmission, the rules in it don't really work for me anymore.Tuning school gets $99 for it, if you want my copy, I'll sell it to you for $60 shipped. I have no need for it anymore. Take care!
2017 GMC Sierra Crew Cab
Forged 6.2L Flex Fuel Tuned
Twin Turbo 13 PSI
8L90E Transmission
3.23 Gears
Yes, it runs on E85 too and LOVES it! ;D
Why did you put an apostrophe in "transmissions?"Originally Posted by =fast=
1971 Corvette-LS3 swap with custom cam. Stainless headers and sheet metal intake built by the owner. 442rwhp.
2007 STS-V-Billet Precision 67mm turbo swap. 563rwhp@15psi.
1991 Camaro-6.0 swap with LS6 heads and custom cam. Headers and other swap bits fabricated by myself (wife's car)
I have no idea, i mean to put transmissions because this is my 2 time i burn 3rd gear.
Its a built transsmission 4l60 in a single cab silveradoIf you have a stock transmission, I have the guide from the tuning school that has a good tune in it. Since I modded my transmission, the rules in it don't really work for me anymore.
theres a 5 friction pack and a 6 friction pack for the thrid clutch and maybe its not getting built right. I just rebuild one that they stuffed the 6 frictions in and left the steel out and burnt it up.
My setup is a 356ci with a 260/268 (212/218 at .050 lift) duration cam with aluminium corvette heads and flat top pistons running 11.3 comp. ratio. with tuned port injection and vortec crank pick up and dizzy running a 411 pcm and 60lb bosch injectors, 1.6 ratio roller rockers.All in a 92 chevy ext cab 4x4 pickup with a 98 cab now installed with a third door!
running only e85
^^^ That could be to but since i have a tranny builder hes the only one that check it. He have built plenty with out this problem.
My belief is, this all comes from bad airflow readings
and a GM bias toward fuel economy.
Trans pressure settings equate to pump load and that
costs MPG. So GM profiled your line pressure vs "load"
to be "just enough".
"Load" is from air mass. Fake that lean according to
net.Wisdom and you tell the trans (PCM) to take it easy.
But the motor and the trailer, they aren't with the program
and the frictions get to deal with it.
Now you can't get at that line:load map really. There are
for some platforms, "general pressure" fields. You do at
least want air mass values to be realistic.
My approach, which I've left sit for years, is to work the
force motor table to bring pressure in early and raise
the line at cruise where I was seeing a lot of TCC slip.
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