My F truck came with a Edge Evo programmer and I have been running on Tow Mode which makes a big difference to stock.
Now I have my gauges and 4" I want to try Performance Mode, but Im curious if there could be any adverse results. ie I have heard of main seals going and such.

 

I ran an Edge Evo for about 6 months and cooked my transmission. Cost me $1,200 to get it rebuilt. I got rid of the Evo.
However i am not bashing the company, it could have very well been my setup? I dont know but i'm not going to risk it again.

 

Wow that sux man, what mode were you running and were you towing anything ?

 

Not trying to take away from Rays story here, but alot of us have lost our transimissions, it seems to be a weak spot in our trucks..

 

I had been running in tow normally. Performance occasionally. No problem Pat i also didn't mention that i had 240,000 on the factory transmission. So it was going to go i just helped it go quicker. My tranny guy said that there was damage that wasn't from normal wear and tear.

 

IIRC the Edge dosen't do anything electronically with the shift points in the transmission. It only boost line pressure.

 

Good morning Jim,
I'm not sure if it is supposed to change the shift points or not but i know my shorts were extremely short.

 

Good Morning Ray.
I think that the sort shifts are because of the increased line pressure causing the shifts to be quicker and harder.

 

I just realized my last post didn't exactly say what i meant. I DO NOT wear short shorts Lol. My legs are way too pasty white!!
Yes that is correct Jim. IIRC my tranny guy said the increased line pressure had caused one of the clutch drums to seize. Which in turn caused the carnage.

 

That's to funny Ray. I didn't picture you as the Daisy Duke Shorts kinda wearing guy.

 

If you could see me you would understand why!!!!

 

Since there seems to be some confusion as to what is going on with the Evolution programmer, I will post some information that I know to be true.

First, the shift point changes vary from PCM code to PCM code. For example, using everyone's favorite of PMT1 will yield very mild shift point changes and even LOWERING the shift points by 1-1.5 MPH during the 2-3 shift in the 1/2 throttle range.

The TDE1 shift strategy is changed dramatically from stock however; gaining a 9 MPH jump in shift speed nearly across the board during the 2-3 shift. If you've ever driven a stock OBS truck with an auto you know why this sizeable change was made.

The issue with the line pressure is not really an issue at all, but yes, there are changes made to the individual shift "TV pressure" maps. Also, the minimum TV pressure is changed from 5 PSI to 10 PSI in most cases along with what is known as the "Torque Table". The higher the values here, the harder everything is going to apply. On the 99-03 PCMs there are "Torque reduction during shift" values that apply a limit to engine torque while an upshift is occuring. Stock values range in the 80%-93% range depending on load.....most aftermarket programming will put all of these values at 100%. The newer PCMs also have a TCC lockup rate map. This will also be raised to lower the "burn time" of the converter clutch.

The bad part about flash programmers is that most all people have different PCM codes than these two (which are considered to be the better ones for 95-97 and 99-01 auto equipped trucks...and especially since we're in the 99-03 section, there are probably about 3 people here who have an actual PMT1 PCM (since according to Bill Cohron, the PMT1 PCM was out less than a month before PMT2 came out) then programming with an Evolution (or Superchips programmer, or Diablosport, etc.) will only change your EXISTING PCM code and not change your NVK? into a PMT1. Your shifting and torque converter strategy will depend on your PCM code.

 

Well That pretty much sums it up!!! Lol