Originally Posted by JackandJanet

Grizz - I'm going to correct one small thing you said: The firmness setting you can adjust on the Edge or the Gryphon is NOT line pressure. It's the delay between one set of clutches releasing and the next set becoming fully locked up. Having this occur too quickly puts stress on components. If it occurs too slowly, you get increased clutch wear.

The line pressure is something that Bill adjusts, when your tunes are written, along with torque reduction. You have no control over line pressure or torque reduction with an Edge or Gryphon. He also changes your "firmness" too, when he writes your tunes, so don't get carried away with making it too "firm".

- Jack

Originally Posted by blk450er

So.....do you think I should back it down from 15 or do you think it is fine where its at? I wasn't planning on going further.

Originally Posted by Superchips_Distributor

This is an *excellent* question - over the years here this has been covered many times, but it's been awhile, and I'm busy enough that sadly, unlike I used to be able to do, I am not here every single day anymore, so let's go over that a bit again.

First, let's ask this question - is it within the realm of *possibility* for tuning (done improperly) to hurt an automatic transmission? and that answer is YES!! It is *possible* for that to be done by someone doing improper things in a calibration.

Now, the more important question - is that actually going to happen?

Now that answer actually varies depending on *who* is doing the tuning and thus how much knowledge they have in general, and then what kind of F-150 *specific* mechanical & tuning experience they have.

With our Troyer Performance custom tuning, which is what most people here go with, no, the tranny's life will not be shortened - in fact, the friction materials (bands & clutches) will actually last *longer* thanks to the reduced slippage.

Another important aspect of this besides things like the simple line pressures is how the torque management is calibrated - some tuners will go in and either eliminate ALL torque management, or reduce it enough in certain areas to hurt a transmission - and this is where years of platform-specific experience comes into play, particularly with these F-150's. Here it depends on exactly which transmission you have (E4OD, 4R100, 4R70W, 4R70-E or 4R75-E) you have and whether the vehicle is using a supercharger and whether it has any mechanical modifications to the transmission that dictates how the torque management needs to be set up to give you the best compromise between best acceleration & performance versus not putting too much power thru the transmission during gear changes that would slip the clutches.

So again, it really gets back to experience on this platform and knowing the weaknesses & strengths of each different automatic transmission.

For example - some of the 2004 5.4 3V F-150's have a tendency to "bang" the 4-2 downshift even in stock trim - so in *some* of those calibrations, we will actually INCREASE the amount of torque management on that particular shift so that it accomplishes the shift smoothly and doesn't bang the drum inside the tranny. Now Ford made a change to the valve body in the 4R75-E trannies that all 5.4 3V's in the F-150 get that eliminated that problem, but it is an issue in some 2004 5.4 3V F-150's, and we know which ones based on the computer strategy for each vehicle.

With our tuning, the issue of potential harm to an automatic transmission is not going to be an issue - we are not shortening the life of the transmission, but instead, actually extend the service life of the friction materials thanks to reduced slippage.

It's an excellent question, but one that with our tuning, you will not have to be concerned with - you will find that we fix a lot of the driveability issues that you experience in your vehicle, as we work very carefully on the transmission's calibration - shift points, torque converter lockup & unlock points, etc., etc.

I hope that info helps, & please feel free to call us if you'd like to go over this in more detail, our number is listed just below, OK?