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  1. J

    Duramaxtuner.com ?

    Hi I was wondering how everyone feels about duramaxtuner.com tuning? What kinda dyno # are common?
  2. J

    Not running right

    I was hoping that I wouldn't have to do that but idk what else to do, also I unplugged through maf sensor and nothing changed? It it supposed to run without it plugged in?
  3. J

    Not running right

    So my LB7 is down on power and doesn't seem to run as smooth compared to exactly the same truck, replaced all the fuel lines and a new fuel filter and don't know what to do. When I pin it, it will pull somewhat hard then kinda die off then pick back up and do it repeatedly, I'm at a loss.
  4. J

    Transmission problem?

    Hi, I have a 2003 LB7 automatic with 97,000 miles on it, when I am pulling real hard up a hill, if the truck hits small bumps in the road or something like that it revs up to almost red line then comes back down to where it was before, I'm at a loss on what this could be?
  5. J

    Getting lots of air in fuel

    Like to post an update on this, I ordered all new steel lines from linestogo.come and replaced them and ruck is running fantastic!
  6. J

    2003 Chevrolet 2500hd

    J.Welsh submitted a new Showcase Item: 2003 Chevrolet 2500hd Read more about this showcase item here...
  7. 2003 Chevrolet 2500hd

    2003 Chevrolet 2500hd

    Low mileage LB7 s&b intake, PPE boost valve, bd lift pump, 4in exhaust
  8. J

    Getting lots of air in fuel

    I pulled the connections of of the pump, and really tightened everything, everything seems to be tight and sound, I'm using hose clamps, thinking about running the in line into a clean bucket of fuel just to see if it will run that way
  9. J

    Getting lots of air in fuel

    So I topped the tank off and turned the key on and let the pump run for a few minutes, the primer gets somewhat hard but I can still pump it pretty easily. Truck will start up and die after about 30 seconds of running...
  10. J

    Getting lots of air in fuel

    It's a bd lift pump, got it for free. I do not have a sump and yes I do believe the truck is kind of low on fuel, I rebuilt the filter housing and replaced the fuel lines with it, also the primer will not get very hard like it did when I first got the truck
  11. J

    Getting lots of air in fuel

    Hi I'm new to the forum and was unsure were to post this at, but my problem is I am getting a ton of air in the fuel system and the truck will not run. Pulled the out line off of my lift pump and it's putting out alot of air and fuel so I'm assuming it's getting it somewhere around the tank? Any...
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