duramax issues...?
#1
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duramax issues...?
I'm asking for my brother in-law... neways his trucks a 2004 sierra has a lb7, 4x4. Mods are as fallowed. S&b intake, mbrp 4" exhaust, edge juice with attitude, 50hp injectors, bd super max turbo.
His truck before the turbo and the injectors would run fine on any tune setting. Now on the higher tunes it seems as if the tranny is slipping or something but only does it sometimes. It will take off hard shift 1-2 but lag 2 seconds or so and do the same 2-3. It ran fine before the mods and only does it on the higher tunes. it would make since with the power to have it slip but it almost feels like it defuels. To me it almost feels like the converter is spinning or something ? Any ideas thanks guys
His truck before the turbo and the injectors would run fine on any tune setting. Now on the higher tunes it seems as if the tranny is slipping or something but only does it sometimes. It will take off hard shift 1-2 but lag 2 seconds or so and do the same 2-3. It ran fine before the mods and only does it on the higher tunes. it would make since with the power to have it slip but it almost feels like it defuels. To me it almost feels like the converter is spinning or something ? Any ideas thanks guys
#3
11 sec. Truck Mod
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Yeah , stock converter and trans only like 75-100 extra horse power , plus switching between tunes is hard on the Allison as it has adaptive shift learn ( drive Like a grandpa it will shift like grandpa , then start to beat on it and it flares till it learns hard shifting).
Edge tuning is crude and not smooth at all on power delivery . I had edge juice/attitude/ hot unlock on my LBZ, hated it .
Smoothest and best power was with EFI live custom tuning , and also the PPE hot +2 et eliminator , shifted nice !
Also the more you limp a trans the easier it is to do it .
So get better tuning and build the trans / converter if ya want big power , if not don't turn up the tuner for now . Also keep a clean fuel and spin on trans filter on these rigs as they will affect shifting also.
Edge tuning is crude and not smooth at all on power delivery . I had edge juice/attitude/ hot unlock on my LBZ, hated it .
Smoothest and best power was with EFI live custom tuning , and also the PPE hot +2 et eliminator , shifted nice !
Also the more you limp a trans the easier it is to do it .
So get better tuning and build the trans / converter if ya want big power , if not don't turn up the tuner for now . Also keep a clean fuel and spin on trans filter on these rigs as they will affect shifting also.
#4
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Yeah , stock converter and trans only like 75-100 extra horse power , plus switching between tunes is hard on the Allison as it has adaptive shift learn ( drive Like a grandpa it will shift like grandpa , then start to beat on it and it flares till it learns hard shifting).
Edge tuning is crude and not smooth at all on power delivery . I had edge juice/attitude/ hot unlock on my LBZ, hated it .
Smoothest and best power was with EFI live custom tuning , and also the PPE hot +2 et eliminator , shifted nice !
Also the more you limp a trans the easier it is to do it .
So get better tuning and build the trans / converter if ya want big power , if not don't turn up the tuner for now . Also keep a clean fuel and spin on trans filter on these rigs as they will affect shifting also.
Edge tuning is crude and not smooth at all on power delivery . I had edge juice/attitude/ hot unlock on my LBZ, hated it .
Smoothest and best power was with EFI live custom tuning , and also the PPE hot +2 et eliminator , shifted nice !
Also the more you limp a trans the easier it is to do it .
So get better tuning and build the trans / converter if ya want big power , if not don't turn up the tuner for now . Also keep a clean fuel and spin on trans filter on these rigs as they will affect shifting also.
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#9
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This is where you need to start....
TransGo SK Allison Shift Kit
Other handy things to get will be a nice multi disk torque converter and down the road a sun coast rebuild kit.
TransGo SK Allison Shift Kit
Other handy things to get will be a nice multi disk torque converter and down the road a sun coast rebuild kit.