Customizing Canned Tunes.

[grizzstang]

So it does hang on to past changes. Now if I can just figure out what I did in there the first time to screw it up I'm all set but for now I will be happy the way it is set up currently.

Thanks Bill.

[Jackpine]

Fair amount of confusion is an understatement, Bill! I think maybe I'm catching a slight glimmer of what's happening though. It WOULD be nice to have the changes to the menu you are thinking of. I sure wouldn't spend time on it right away though if you have custom tunes for people hanging in the fire. (Unless, of course, you need a break from that task and you feel like a different challenge).

I'm still very puzzled about grizz's truck sounding like it was running rich at idle. How in the world could he have altered the idle mixture? And, if it wasn't that, what else would give those symptoms?

- Jack

[Power Hungry]

Not a clue at this point. However, if he can recreate the issue I can look at the built custom file and see what happened.

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.

Hope this helps.

[Jackpine]

Originally Posted by Power Hungry

Not a clue at this point. However, if he can recreate the issue I can look at the built custom file and see what happened.

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.

Hope this helps.

Hopefully, he won't TRY to recreate the issue - I wouldn't! But, should this happen to anyone else, I'll try to keep it in my memory banks.

- Jack

[grizzstang]

There still is a problem. I can't change anything other than tires, gears and shift firmness or it will not work no matter how I change it. The last time I tried it would not even start until I changed it back. I am assuming you don't have to go back to stock first every time you change something on level 2. I have just been loading level 2 and making the changes before it loads (not using the load previous settings option).

The unit does say it is on 2 but other than the shifts being way to hard I could not really feel any significant power difference. I ended up putting the shift firmness down to -5, -5, -6 to soften them up and it still slams into gear between 1st and 2nd when I stand on it. I suspect this is because of my Factory Tech Separator Plate but I thought 0 would be factory stock settings is that not the case? Or does the level 2 add shift firmness and that is considered the new 0 and you adjust it up and down from there? If that is the case how much does it add so I know how much to take out? Will having the firmness that far in the negatives harm my transmission?

As for running Pegasus, what are the minimum computer requirements? My home computer basically just keeps my desk at home from blowing away and is going to be replaced as soon as I can.

Sorry to be a PIA but I am just trying to figure out what is happening here.

Thanks.

[grizzstang]

Bump for answers to the above.

[Jackpine]

That plate is likely causing the hard shifts you don't like. When you load a tune in any level, the shift firmness is automatically increased and becomes a new "0" setting. Ever since I got my programmer, I thought the firmness was about right at this new point and I never wanted to set it higher. (I did try it once and didn't like the feel). But, if your plate adds it's own "firmness increment", then the "0" point is possibly too hard for you.

I say all this without having any clear knowledge of what a factory tech separator plate really does, but I can sort of guess that it possibly acts something like a clutch plate?

I don't think you can hurt anything by reducing the shift firmness more. It sounds like you're happy with settings of -5 and -6 for the 2-3 and 3-4 upshifts, but still don't like the feel at 1-2 at high RPM. The gear change is not too high at that point, so the engine gets back to a high RPM fairly quickly. I'd have no hesitation in reducing the firmness to -10 on the 1-2 upshift and even more than that if it's still not quite enough.

The effect of reducing firmness is to prolong the slip in the transmission that occurs as the speeds on both sides are equalizing. Some slip is both normal and desired. It would be damaging if no slip at all occurred.

You do not have to go back to stock tune between changing tunes. You can even reprogram at the same level without changing anything, or you could change just one thing, like the 1-2 upshift firmness.

I just had another thought: I wonder how you'd like it if you left the firmness settings alone and reduced the WOT RPM shift point(s)? Again, this should not hurt anything, but might "tame" things a bit without really hurting performance.

Any computer running XP is fine for Pegasus. There have been some problems with Vista, and Bill has added instructions in the Pegasus manual for Vista users.

Anyone else with better thoughts?

- Jack