That would be a change. I work for charity so often (gotta love the auto repair industry) that getting paid would probably give me a heart attack.

Besides, I have no secrets. I like to help out....kind of gives me a purpose.

I will sit this one out and read. Lots of great info here. :thumbsup:

I think I am starting to get a good undertanding of how it works, There must be like a library of tunes that you can look at for a specific request and pull one to meet the need. I would guess this library grows from R&D and live tuning sessions. Does that sound about right?

Which of course leads to another question. What kind of things can be manipulated?

So far Ive seen mentioned

Shift stragergies
LIne pressure
TC lock points
fuel (is it how long the injector fires)
timing (I assume of the injection)

I can't give you specifics on Bill's software yet (hopefully by next week), but I have been inside and out with the Sniper Delta Force software.

Ford in their infinite wisdom decided that having specific parameters that are tuneable would be too easy so the Ford PCM actually uses many different ways of controlling different outputs such as "line pressure". The 95-97 automatic parameters that I have to work with are few and far between. The "torque table" is a pretty easy way to firm up shifts across the board. However, TV (throttle valve, which is OLD school mechanical terminology) pressure is the shift pressure in relation to APP (accelerator pedal position), so there are two ways....then there's a "solid state" TV variable.....:hehe:

"Injection timing" is another one of those "more than one way to skin a cat" type things.....and there are a lot of ways to do it.

It's a lot to get your head around!

I have the Sniper Commando for the '05 F150 right now and there are so many different parameters to mess with it is still down right confusing. After seeing Bill's software and messing around with it, I think Bill's is a little easier to use and is more complete. Bill also took some time better explaining some tuning parameters to me while he was in Utah, even though it was not his software, how much better of a person or company could you ask for. I will be buying Bill's software soon. Thanks Bill and Corey you guys rock.:bow:

Ty

Ty,

Sure thing, man. It comes out of my head and there's no copyright on it, so feel free to use it.

Why a fueling-box style module is a bad thing for a E4OD/4R100:

The factory programming is set up for a specific torque input into the transmission. The programmers spent a lot of money to get the accelerator pedal position (APP), EPC (electronic pressure control) system ("line pressure"), shift speed calibrations, etc. just right so that maximum life expectancy was achieved.

Aftermarket programming is one thing...it can take into account the increased power output of the engine for a given APP. This helps the shift duration feel stock or firm depending on torque input. Also, the road speed at which the shift occurs can be altered for a given APP.

When a fueling box is added to the 7.3L PSD, the sensor input to the PCM for injection pressure is corrupt. Essentially, the PCM "sees" a lower pressure than what is actually there. The Ford PCM programming allows it to command a higher injection pressure regulator (IPR) duty cycle to increase the pressure output of the high pressure oil pump to what is desired, even though the pressure is actually good. This raised injection pressure has an effect on a few tuning variables in the PCM, but the power increases caused by it are not applied to the transmission shifting parameters.

The higher injection pressures will cause a more responsive accelerator pedal. This means that for any given engine speed or load, the APP voltage input to the PCM will be lower. The PCM bases it's EPC, shift scheduling, and calculated torque on APP (indirectly through MFD or "mass fuel desired"). So, the PCM thinks the actual engine torque is lower than stock for any given accelerator pedal input even though the opposite is true.

More power with earlier/softer shifts and lower line pressure equals bad news. Some folks can run around with these devices and have no problems....it all depends on driving style. They are not something that should be used for heavy towing or racing. Yes, they operate as designed and usually add a couple MPG. They work well, but are better suited to manual transmission trucks.

I hope this helps a bit.

EDIT:

By fueling box, I am talking about the Edge Juice, Banks 6-gun, Dr. Performance/Workhorse, Dfuser 18K, etc.

Cody....Wow! Great information. :cool:Thanks for writing it. I just copied it to my Tech section folder to be added to my website soon. :yesnod:

Thanks again

Ty

Good stuff, Cody! :2thumbs: Especially the accurate representation of the relationship between the throttle and the trans torque table. That's the part that people don't catch when they stick a pressure box on their truck.

Wow! Praise from "The Man"! :ford boob girl smal

Have you reached the big time, or what, Cody? :)

- Jack

Hey, he's a boy, I'm a boy, what more is there to say? :smiley_roll1:

- Jack