WILL AN INCREASE IN LINE PRESSURERESULT IN A TRANS THAT GETS HOTTER FASTER? NOT SAYING IT IS NECESARILY RUNNING TOO HOT. TRUCK IS A DAILY DRIVER IN ATLANTA STOP N GO. BIG DIFFERENCE IN PERFORMANCE WHEN TRANS IS READING 200 F. OR SO. I TURNED LINE PRESSSURE DOWN AND IT SEEMS TO RUN COOLER. ? JUST NEED CLARIFACATION PLS. ALSO SHOULD SHIFT FIRMNESS BE SET THE SAME FOR ALL SHIFTS, VS. MORE FIRMNESS ON A 1-2 SHIFT THAN A 2-3 SHIFT?

 

Thinking logicly, line pressure is what activates your clutches giving them holding power. Therefor.. more line pressure = more holding power on clutches = less clutch slip = less heat. However too much line pressure is bad for the internals of the tranny.

 

Pumping into a higher regulated head pressure also makes
heat. But there's heat, and there's heat. Heat in the fluid
can be scrubbed out. Heat at the clutch faces, has a long
thermal path to extract. High pressure means the clutches
grab early and don't spend much time making friction heat.

When your line pressure drops to the point that you are
slipping you will probably see a rapid rise in trans temp. I
saw this just from TCC slippage on a road trip last summer.

 

That makes sense. How high can the line pressure be set? My tune from a local guy has my line pressure set at 130, but when Ive tried to change it regardless of what number I put in it wont go higher than 100 ?

 

look at the max line pressure settings on the shift properties page
and look at the base shift pressure vs tq vs gear
you may not make 640 tq and arent touching it

dont know for sure
asked about it before and got no responses
maybe youll have better luck


how safe is 130