Chevy/GMC Duramax 04.5-05 LLY Discussion of Chevy and GMC Trucks with LLY Duramax Turbo Diesel Engines

Transmision Rebiuld

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Old Nov 22, 2009 | 03:02 PM
  #11  
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that MPI kit looks pretty neat. . . when they talk power are they saying with stock injectors???

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also is it worth upgrading to the 6 speed allison? good brand of injectors??
 

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Old Nov 22, 2009 | 03:20 PM
  #12  
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Lots of power can be had with stock injectors its been time and time again, but the ammount of timing and pulsewidth is really eye openeing(IMO) when you sit down a crunch numbers and see whats really going on in the engine to get all the required fuel with stock injectors.

if your wanting a strong transmission for the money the 5 speed would be a better investment.

injectors are a huge debate on who to go with i cant say anything on that.
 
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Old Nov 22, 2009 | 03:49 PM
  #13  
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i wish i didnt have a budget

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i saw when you did your FPR you were running a LBZ regulator in your LB7. . . what exactly does that do? do you recommend it??
 

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Old Nov 22, 2009 | 04:09 PM
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the lbz/lmm FPR can flow more fuel, with that you should be able to run a higher pulsewidth and maintain the same rail pressure, or vice versa.


you will need a scan tool such as efi live to be able to tell if you need some modifications in the first place, like a lift pump or modded fpr.
 
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Old Nov 23, 2009 | 09:41 AM
  #15  
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i plan on doin a lift pump and water meth right away when i do the tranny and FPR. i think im goin to wait on the motor rebuild. if i run the edge juice with attitude in level 5 i dont get enough fuel and high EGT's(its hard to keep the EGT's down with a 4inch lift and 35's). i want to get an efi live right away to. with a lift pump and the LBZ FPR it should run enough fuel not?

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i plan on goin with a 4" diamond eye turbo back dual exhaust kit. is for 4" big enough for my power goals or should i go 5"? i feel bad asking you all these questions haha

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what are some symptoms of the FPR being bad? i was reading up on this and i have none of those symptoms that they were saying. my truck surges hard at idel. it will shake the truck when it surges. sorry bout asking you all these questions man
 

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Old Nov 23, 2009 | 11:45 AM
  #16  
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it should run plenty of fuel given the amount of air you can make with the stock trbo

4inch exhaust is fine in most applications, 5inch would be too big for a dual and you would have to get rid of the spare for that. but i have a 5" exhaust if you were wondering

sometimes when the stick you will year them start tapping really loud at idle and acceleration in the low rpms. it shaking that could be injector related get someone or somthing to do a balence rate test
 
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Old Nov 23, 2009 | 01:59 PM
  #17  
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the efi will beable to run that test and many others not? its wierd cuz sometimes it wont surge other times it will. it jumps rpms every 10 - 20 seconds then it will run fine. it blows now white smoke and has all its power. it only surges at idel
 
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Old Nov 23, 2009 | 03:12 PM
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how does the smoke smell like fel or coolant?
 
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Old Nov 23, 2009 | 03:14 PM
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i ment "no" sorry bout that. . .
 
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Old Nov 23, 2009 | 03:16 PM
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no codes at all?
 
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