Originally Posted by Aftermath2014
Is your Duramax same as mine? I was told that its a LBZ detuned to LLY has slightly smaller injectors and a little less hp. By the way how much is quite a bit? I thought I have cranked on it more than I wanted to already.
I wouldn't think that your motor would be detuned. Your motor should be equal to a 2500HD/3500 truck. From what I remember only the Vans were detuned but never by smaller injectors. I looked up the part numbers for a van vs truck and the numbers are the same for the injectors. The ECM has alot to do with the tune. I have to ask this question. Do you think the ECM is at fault? This motor you have. Was it a complete motor? What did you have to do to make it complete?There should be a fuel port that you can put a gauge on to see what the fuel pressure is before the CP3. I would look to see what pressure you have there. Are the lines from the fuel filter on the correct side? Just asking because I really think you are not getting any fuel.
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