Customizing Canned Tunes.

[grizzstang]

Originally Posted by JackandJanet

Gryphons and Edges don't program well when the battery voltage is low. If you have any doubt, connect a low amp (2-10 amp) charger and leave it on while you are programming.

I don't understand what it "doesn't like" about adjusting WOT shift points.

I am going to put the charger on it tonight on 2 amp and let it charge up fully, then I will load the program, with the charger on, and make all the changes I want to make and see if that works.

It goes back to what was happening before. If I adjust anything else other than tires, gears and shift firmness my truck freaks out. If it even starts it will idle like a race car and push enough fuel to make your eyes burn.

I know Bill is busy but I would kill to get an answer on the bolded question above does anyone else know?

[Power Hungry]

Please... fill in the personal and vehicle information so I can have some reference of who this is and what we're working on.

In regards to the shifting, please note that the Custom Option is labeled "SHIFT FIRMNESS", not Shift Pressure. There is a reason for this. This option does NOT change shift pressure, but instead changes the time delay between the offgoing clutch and the oncoming clutch and is calculated in percentage change from the current values. As for how much pressure is added to each shift, there is no flat value. Heavier throttle/higher speeds have more pressure than light throttle/low speed. If I had to give a ROUGH value, I'd say 5, 6, and 8 PSI for the 1-2, 2-3 and 3-4, respectively.

One thing to keep in mind is that all Custom Options make changes to the MODIFIED file values (ie. Level 1, 2 or 3), not the stock file values. In other words, if the 1-2 shift delay on Level 2, for example, is 450 milliseconds and you set the 1-2 Shift Firmness option to +5%, you end up with about 425 milliseconds delay. If you set it to -10, you get 495 milliseconds.

If you are running a valve body plate and need the shifting corrected, you'll need to have a file built to eliminate ALL shift pressure and delay modifications. There's really no other way around it.

As for the other custom issues, again I'll need to know what vehicle and calibration codes we are dealing with before I can look into it any further.

Take care.

[Jackpine]

Since you haven't installed Pegasus (why not?), it's pretty obvious you haven't done this (from Bill's post earlier in this thread): To retrieve the file, plug the unit into the USB, run Pegasus and select [Utilities] -> [Retrieve Critical Files]. This will read the files from the programmer. E-mail me the CUSTOM file and I can see what's wrong.

Y'know, I think you're going to HAVE to do this if you expect Bill to be able to help you. And, I'm sure Bill can give you some idea about the relative value of the shift firmness, but I imagine it's not a simple matter of the "firmness points" that you see on your menu. I'd guess the effect to be in the neighborhood of about +10 for each of the shifts over stock, but it could easily be more.

But, install Pegasus and retrieve the custom file you've created so Bill can help you.

(Bill you're too quick for me!) You got your answer in right before I posted this. And, nice to know I was sort of right about the way shifting is modified - not the simple adding "firmness" property we have on the menu.

- Jack