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1-9 of 9 Results
  1. General Discussion
    I had an issue with my 04 lly, poped the hood and there was a good amount of oil around the turbo area. Still creating the same amount of boost and still the same loud whistle it has always when I bough the tuck last August’s. The turbo is just about 2 years old. Some other issues were a...
  2. 04.5-05 LLY Performance Parts Discussion
    Looking to see if anyone has tunes they want tested out. Looking for a lope tune and a smoke tune. I have a bully dog gt tuner.
  3. 04.5-05 LLY Duramax Powertrain
    So this started back about 6 months ago but my truck has been doing the rough idle thing when it reaches ~160 degrees. I had a mechanic shop tell me it's my lift pump but I don't think that's true because it was also doing this before I installed the lift pump. I had a buddy tell me it sounds...
  4. 04.5-05 LLY Duramax Powertrain
    4.5 2500HD lift pump went out 2 weeks ago, unhooked lift pump and hooked it up stock and truck goes dead on the way home. Changed out motor on fass pump and still no start. Shows high fuel rail pressure code-changed out fuel rail sensor and truck cranked up pretty easy. "thought I had it...
  5. 04.5-05 LLY Duramax Powertrain
    Truck will start but can hardly remain running and definitely will not drive. Cannot get a read out on injector balance rates and there’s about a difference of -2 between DFRP and actual FRP. So I had dropped the truck off to get the ac condenser and heater core replaced and truck ran without...
  6. 04.5-05 LLY Performance Parts Discussion
    Hey all, i'm replacing my factory exhaust off my 2004.5 LLY Duramax. I've decided to go with the MBRP Pro series downpipe-back exhaust and a stainless steel downpipe from PPE. My question to anyone who has done this, is it necessary to buy the PPE downpipe support bracket? I've seen some guys...
  7. 04.5-05 LLY Duramax Powertrain
    I have a 2004.5 lly duramax that hasn’t had an egr delete and I didn’t know if I would have to have it retuned when I do the delete.
  8. General Discussion
    I have an lly recently tuned w a 5 stage efi live. My throttle would previously become rock hard to push down upon getting back into it while going down the road. Since having the tune installed this is happening more frequently. I will be riding down the road, after letting off the pedal and...
  9. Introductions
    I have a 2004.5 LLY with a Banks Six Gun and ETG. Every now and then, if I drive for 2 hours or longer, then shut it down... When I fire it back up, it will die after a few seconds. I will have to jump out and re-prime the fuel system. It never seems to happen if I only drive for an hour or so...
1-9 of 9 Results