There are a few things to keep in mind when changing transmission settings. I don't know what system you have that does editing, but I am using an aftermarket control for my trans that has graphs where I just need to click on the line at a specific speed and rpm and move it up or down to adjust trans pressure in each gear.
I have a transmission pressure guage permently mounted on the left side of the windshield. One of those pods that holds a couple of guages. So I'm set up for it and know the pressures to look for and when.
I know enough about adjusting these transmissions to understand you can fry the 3/4 clutch pack very easily if you screw up.
In the stock ECU, many things are considered for adjusting the shift. The computer is looking at RPM's, MAF, MAP, VSS, and Throttle Position. It has had a program written by many experts colaborating for years to perfect that program. The chance that your are going to make any adjustments that will increase effeciency or life span are next to nil.
If you are looking for performance increases that's one thing. If you are looking for economy, that is another issue all together.
I'm doing it on my 95 Tahoe to try to keep the power coming from the "hair driers" , under control. My 2001 Tahoe is bone stock and will stay that way. My 95 has a 4L80e, having exceeded the limits of the 4L60e.
In my program section for "Force Motor Tables", it is note worthy that the higher the setting the lower the pressure. Be sure you know what direction does what, on the changes. They up the pressure by not pulsing the solenoids as often. It wold be a common mistake to think that if you take the reading up, the pressure will go up. Maybe, maybe not. Depends on how the software was written. In computer programming, sometimes up means down. lol
The only safe way to do this is to have a pressure guage hooked to the transmission. The hookup point is on the left front side of the transmission. You need a guage that goes from 0 to about 350 pounds. Then you need to get some information on what pressure is expected at each shift point.
It would also help to write down what it was before you changed it so you can get back to where you were, if needed.
Keep in mind that 4L60e tranny's don't have the strongest clutch plates. They don't take a lot of abuse. Good luck.........:cool2:
