hey guys i just got talked into the efi live and had the ppe [wich i had no problems at all with] but i am having a shifting issue so looked for some help ,and the person that i asked told me that the efi live would be able to correct this ,and he would give me all the help i would need unfortunately that person has been completely unavailable since the purchas ,he also had told me that mabey a new tcm cal would make a difference in the shifting an promised me he would e=mail me a 2001 tcm cal and once again nothing.-:t so that being said i would love if some one out there could help me with the tuning with the alli and the d-max it would be very much appreciated:rant: :lol:

PM me your Email address and I'll send you a 2001 TCM cal.
This may or may not help you.

Most of the shift quality for the high HP tunes resides in the ECM.

sorry guys i guess i posted this thread in the wrong place did'nt mean to afend

u want an 01 file for your 04.5 truck?

will it work Guy?

yes lots of people put a 01 TCM in there 02-03-04-05 duramax/allys
like trippen said though alot of the shifting is done by the ECM
personally i dont think the TCM tune will help and you will have to fix your tune in the ECM
but that just me

maybee you just need to reset the taps and start fresh with the new tune
maybee your TCM has learned the PPE
and YES you will be able to fix your shifting with EFI,im sorry to here about the service from the EFI vendor
but think about this place as your vendor and ask your questions here
imo once you get EFI you are promoting sales and selling it to friends
weather you know it or not

thanks for the reply ,but the trans has been flashed and all taps reset many times and it's not an ecm issue as with both progfams do the same thing and all though i might be wrong i think that the ecm dose not control the shift timing,or converter lock up dose it?

both programs as in both tunes? if so that means nothing
you are correct does not control the converter lock up and shift timing
but in a way it does i can change the fueling tables and have different shifts
the ECM and TCM work together in alot of ways
if you go back to stock do you shift good?

all though the shift is better i think it has to due with the power diferance in the way the trany is shifting i don't know why it's doing this i have several tunes that i run and they all seem to do it all though when a small une is installed and driven easy for awile it seems not as dramatic as with the larger race tunes

all though the shift is better i think it has to due with the power diferance in the way the trany is shifting i don't know why it's doing this i have several tunes that i run and they all seem to do it all though when a small une is installed and driven easy for awile it seems not as dramatic as with the larger race tunes

Let me try to explain what "might" be going on.

The stock ECM calibration is delivering a certain quantity of fuel at a given rpm and throttle position.

The stock calibration was written so that the fuel and tq reduction works well together for a smooth shift and also works with the tcm calibrations.

This is the defuel effect felt on the stock programming.

If you increase the fuel quantity to increase HP/TQ you are now still reducing the fuel and tq to the original stock quantities and that does not work well.

The more changes you make in the ecm tune the more adjustments you have to make to other area of the tune to make it shift well again.

The catch is that the tcm will not catch up to the ecm quickly, so you have to make a change and wait for the tcm to catch up in order to see if the change was good or bad.

It is a time consuming process to re-calibrate the shift defuel and tq reduction.

It can be done, but it takes time.

Then if you alter the fueling and power again you need to go back and re-address the tune once again.

Good Luck,

T;) NY

so the tcm has to learn what has changed in the ecm and almost level it selfout before you can acurately judge your tune? kinda sorta?

so the tcm has to learn what has changed in the ecm and almost level it selfout before you can acurately judge your tune? kinda sorta?

Yes,

When you up the power the tranny has to catch up, it does this by the tcm adjusting shift timing and fill rates.

You can instantly change the ecm by loading a new file, but the Allison still learns over a period of time.

The more changes you make the more confused it gets.

That is why it takes a great deal of effort to write a tune and have it shift properly, making HP and TQ is not too difficult, making it smooth running and getting it to the ground is another.

:cool:

Stepping the power up slowly allows the trans to learn properly.