Ya-Hoo!

[F-127]

Well, I finally have a truck that could use some custom tuning. Is that a good thing? Well, if I didn't have Minotaur it wouldn't, but being I do...

Here's the deal I bought the 97 F250 7.3 auto already modded, for much less than I could have done it myself. It already has a 6-position TS chip with nice tunes, couple stock driving ones, but when you switch to the higher HP tunes the pedal is touchy, smokes lots, and jerks enough that you can't cruise while set to those higher tunes. I did find one position that was a happy medium that had good power and driveablity.

Soooo... since I have the Minotaur software I can't not make tunes for it right? I'll start with the mods: 17* HPOP, 238/100% Rosewoods, H2E, 7.3 IC, headstuds, FASS pump, those are the primary mods, with a auto tranny built to take it.
I began with a 25hp tow TDE1 file, and set to work away on creating a "like stock-performing" tune. First change I did was change the MFD so I have more of the map to work with (stock only utilizes about half of the map). Essentially though even as I changed it, MFD is nearly identical to stock. Changed the ICP duty cycle to account for increased volume of a 17* over 15*, raised the ICP desired slightly across the boards. For the pulsewidth I used injector flow data from PSN to get the map set to what I thought might be as close to right as possible before trying it out.

After a few trials I made very few and minor changes to get the idle smoothed out, after that I proceeded to make a test drive and see how it did. It really ran smooth and I was impressed.... until the I reached a situation where I 'coast' when the TCC unlocks. The engine then begins to do a quick romp/lope until I come to a stop or roll back into the throttle. I hooked up my brothers scan tool and checked for some information, engine was romping from about 630 rpms-650 rpms. I checked the ICP and MFD and figured I should add some PW to that area. Made 6 new files with hopes of finding 'the one' with no avail. Altough the file where I added the most PW the engine romped from 640-670. I'm thinking maybe I just got greedy and went to far to quick? I didn't get that figured out, but so I didn't feel bad about myself I made a file up with some more fuel. Ahhhh... that was fun, smooth, power, me like. So, altough I didn't get the pleasure of getting it all ironed out, I was able to make that turbo scream with my tuning.

For now, I'm just running the regular 6 position that came with it until I get another day with a good chunk of time to do some more trials. Until then, anyone have any ideas or pointers? Can't wait until the day I can drive it around and say tuned by ME(and possibly with the help of others on here) lol.