defueling bad

[Dieolectricfish]

hi im farly new here and in reading in the past I have gotten a lot of help.
so I have an 01 lb7 and its defueling bad, so bad u cant drive it, watching the rail presser gage u can see it drop down to 5k and truck will not get out of its on way. it started after I WOT and limped the Allison, so I rebuilt it with transgo kit and red eagel alto stacks all with in speck, but being cheap I used my old converter now will really bad torque converter slip coz this? does go better in lock up and when tran temp hits 150 plus. if I see the rail pressure drop I let up and it will come back and it will go better then... I just want to make sure befor I dump 1500 bucks just be for winter and x mas!!!!

 

[turbostang7]

Desired rail pressure or actual rail pressure?

 

[Dieolectricfish]

reading rail pressure not desired

 

[turbostang7]

How long has it been since the fuel filter has been changed?

 

[Dieolectricfish]

soon as it happen I changed both of them on the air dog / only fitters I run

 

[Dieolectricfish]

i have done black box and reviewed and the desired does call for a drop....

 

[turbostang7]

I believe that it will see slippage with the torque converter and defuel for that (someone needs to confirm this)
If it is actual rail pressure the desired would be good to know as well, it could be fuel issues.
Is there any codes thrown?

 

[Dieolectricfish]

no codes its a fresh build cp3 injeckters lift pump the hole 9 yards with tune went great for a week till I WOT on the big tune " cuz I can" and be f...ed ever sense only thing not knew at this point is the tq I just wish I knew how to get in and see input speed vs. turbin vs. out put

 

[THEFERMANATOR]

If you have a v2, theres a pid to see what converter clutch slippage is. It may be one of the transmision states.

 

[Dieolectricfish]

I do have the v2 just very confused with it ill play around and see what I can find