trans tuning.

John Anderson · #1 Mon, June 8th, 2009, 07:37 PM

Mustang, I suspect you are sled pulling. There is definately a way to do what you want. Bill should be able to hook you up.

If you do have the Minotaur software, let us know what you are doing that you want to be like that. For example, towing, daily driving, or sled pulling. We can go from there.

mustang_gt_350 · #2 Mon, June 8th, 2009, 09:48 PM

Quote:

Originally Posted by John Anderson

Mustang, I suspect you are sled pulling. There is definately a way to do what you want. Bill should be able to hook you up.

If you do have the Minotaur software, let us know what you are doing that you want to be like that. For example, towing, daily driving, or sled pulling. We can go from there.

It would be for sled pulling. Basically i want to try it for a speed sled. I think if i start in 2nd like normal and manualy change it to drive and let it shift into 3rd with doing this and not having the downshift even if i drop below the turbo and loose power the speed that is first generated will be a better gain than pulling in 2nd only. Just an idea, it will be a while until i can hook to a speed sled to find out.

John Anderson · #3 Tue, June 9th, 2009, 09:36 AM

What you want to do will work. If you have the Minotaur software, this is very easy to do. If you look through the scalars, you should see the ones to adjust for the downshift vs throttle position. Just set it up so that it won't ever down shift until the vehicle speed is zero.

Bill might have a better way to do this, but thats what I can see.

mustang_gt_350 · #4 Tue, June 9th, 2009, 04:33 PM

Ok i had thought about doing it that way but i wasn't sure and wanted so see what somone else thought.

soutthpaw · #5 Tue, June 9th, 2009, 05:06 PM

John is correct, you can definitely do what you want to do. also you are going to need look at your torque converter settings as to if and when u want it to lock up.
Hope you have a built tranny

mustang_gt_350 · #6 Wed, June 10th, 2009, 05:39 PM

I have a manual lock switch for the T/C so thats not a problem, however the built trans is

lol

***Power Hungry*** · #7 Wed, July 22nd, 2009, 11:12 PM

There are 2 switches which control the trans and converter states.

Switch 1 will turn on or off the ability to lock the trans into a specific gear. There is a values that is used in conjunction with this to select the gear in which to stay locked (1, 2, 3, or 4).

Switch 2 will turn on or off the ability to lock the converter. On 94-97 this is simply an on or off state. On 99 and later, it is used in conjunction with with a value that determines the pulsewidth in which to lock the converter. Normally, this would be set to 100%, but if you're really curious as to how fast you can fry your converter clutch you could set this to 25% or 50%.

We frequently do "sled-pull" applications on a chip that goes something like this...

Pos 1: 2nd Gear, Converter Unlocked, Fuel Curve modified to spool and light turbos
Pos 2: 2nd Gear, Converter Unlocked, Pulling Fuel Curve
Pos 3: 2nd Gear, Converter Locked, Pulling Fuel Curve
Pos 4: 3rd Gear, Converter Locked, Pulling Fuel Curve
Pos 5: 4th Gear, Converter Locked, Pulling Fuel Curve
Pos 6: Normal Operation, Light Fuel Curve

Instead of 1st gear, we can also set up to start in 1st gear.

These types of strategies work really well because they completely bypass most of the delay circuits in the shift strategies and just grab the gear desired. The only drawback is that you have to be very careful when switching or you could accidentally skip a position and jump 2 gears instead of 1. In a bouncy truck it's quite easy.

Anyway, just some thoughts.