Truck is an 01
Trans mods are Trans-Go, Alto Clutches, and Succoast Triple Converter.

Edge set to no defuel, i am getting really sloppy shifts, when cold the tranny shifts incredible nice crisp fast shifts, when hot very slow and sloppy, do i need to reset the tcm?

How many miles on the trans since the rebuild and did you clear the TAPs?

Even with the edge set with the defuel "off" there is a good amount of defuel. You may be expereincing this???

there is about 5000 miles on the trans since rebuild have never cleared the TAP's, how do you do that?

Reset all you want, the defuel will still be there. VERY annoying to say the least.

is there no way around it?
going down the track it feels like it takes about 10 minutes to shift gears. very frustrating,

Is there someone out there that is building a tuner or a pcm that removes defuel programming completely?? I would like to be able to purchase a pcm or tuner instead of adding the co-pilot, I think that adding one more control module is just asking for more problems at sometime in the future. Tuner/pcm to remove defuel and build more power would be great.

Order an Xtreme from TTS.............no defueling..........

Or You can STACK a QUAD 215 with it...........your choice.........

Both will work............don't ask which is better...........:D

Good Luck...........

T:eek: NY

What do us lowly lly's do?

Rob

Buy an LB7 or start banging on TTS's door.

If you remove all the defueling between shifts you will fry the clutches.

The LB7 does not typically shift lazy, nor does the LLY with good programming.

Driving around town, my tranny shifts very nice. When gettin on it, sometimes it breaks the tires loose on 1/2,2/3,3/4:D . When doing boosted launches or sometimes just W.O.T. on the street there is a long flat spot during shifts, a lot worse than stock tranny was. There seems to be no rhyme or reason for it. I've yet to have a good shifting pass at the strip yet. I'm getting desperate.:help:

Rob

The factory ECM will defuel between shift unless reprogrammed. The Add-on type boxes Edge,VA,PPE,Quad...... cannot make it go away. They can however make it much worse and it has been reported with them all as the power goes higher. So you need to decide where in the power game you want to be and buy accordingly. Also if the TCM is reporting any slipping the defuel gets worse as a safety feature that's in the ECM as well. You need to start by getting a scantool onto your truck and check it out before you spend more money on something else.

Thank-you Diesel-tech, I still very new to the whole game, and trying to figure out what's causing the problems. Your explaination helps with me putting things together. I'll try to find someone local with a tech 2 and first see about slippage. Sorry if I hijacked the thread.

Rob

The big VA gets blamed for funky shifting as it fuels extremely hard in the upper RPMs as well as during the shifts. If you look at your RPM, I think you'll find that it is going out of range and hitting the RPM limit. Most programs will just fall off, but since the VA is programmed to fuel hard, it babbles like a MSD rev limiter. Programs with extended RPM tables will cure this, but the reality is that the transmission is not getting the job done in time.

The big VA gets blamed for funky shifting as it fuels extremely hard in the upper RPMs as well as during the shifts. If you look at your RPM, I think you'll find that it is going out of range and hitting the RPM limit. Most programs will just fall off, but since the VA is programmed to fuel hard, it babbles like a MSD rev limiter. Programs with extended RPM tables will cure this, but the reality is that the transmission is not getting the job done in time.


now that you mention rpm i think that is the best answer i have heard, the truck does seem to flatten out during shifts, i reset the rpm record than went wot from a stop to 5th gear and the truck hit 33xx rpm which would be the rev limiter, you did hit it right on the head thought when you said that the tranny just dont git-er-done quick enough.

i have autotap (pc based) i will try to see if the trans is slipping at all.

Just did some driving myself. When truck shifts at 3100RPM or so it shifts firm and breaks the tires loose. Sometimes it hits 3300+ and flattens out on the shifts. Now we may be getting somewhere. I never paid the tach much notice before.

Rob

Since the stock ECM stops fueling before 3300 the engine should not run past there. If the box your using is causing the RPM to run higher then you need a ECM reprogram because of the add-on box, plain and simple. So if you get rid of the box the problem goes away and if you buy a ECM reprogram it goes away................... why not just get the ECM programmed properly and be done with it?

IdahoRob

Your sig says you have a Predator so you can go in and change the Rev limiter so I have heard. If so, move it higher and let us know if it solves the problem. If it doesn't then it is most likely defueling causing it or slipping in the transmission.

IdahoRob

Your sig says you have a Predator so you can go in and change the Rev limiter so I have heard. If so, move it higher and let us know if it solves the problem. If it doesn't then it is most likely defueling causing it or slipping in the transmission.

Unfortunately the predator only adjusts the speed limiter not the rev limiter.

Diesel Tech, thanks for the imput. That's what is happening, the truck hits around 3200/3300 and flat lines until it shifts. Do any of the lly boxes have the ability to adjust rpm limits? I'll try to find a tech 2 to make sure the trans is not slipping.

Rob

Well I know my truck shifts funny from time to time with the Big VA. I just get use to it. Once the trans is in I think it will clean up, hopefully....

Diesel Tech, thanks for the imput. That's what is happening, the truck hits around 3200/3300 and flat lines until it shifts. Do any of the lly boxes have the ability to adjust rpm limits? I'll try to find a tech 2 to make sure the trans is not slipping.

Rob

There are others but the one I can think of is the PPE Xcelerator or HotXcelerator for the LLY. I know Diesel Tech is also working on a ECM program for the LLY. I'm not sure if he adjusts the rev limit or not. I'm curious if it does.

Well I know my truck shifts funny from time to time with the Big VA. I just get use to it. Once the trans is in I think it will clean up, hopefully....

I have a transmission..............it doesn't clean up..............

I have been there.......done that...........:cool:

Sorry..............:eek:

I heard a rumor. :cool:

I heard a rumor. :cool:

Well, you gonna let the rest of us in the Hen house hear it?? Do tell!!

Do tell Mike L.

I heard a rumor. :cool:
I think I know;)

BS no you don't come on Mike spill it.

Diesel Tech, thanks for the imput. That's what is happening, the truck hits around 3200/3300 and flat lines until it shifts. Do any of the lly boxes have the ability to adjust rpm limits? I'll try to find a tech 2 to make sure the trans is not slipping.

Rob

We can set the rev limiter where ever you want it, but if she lets go cause it's to high do not call.