Dumping fuel

S

scott3106

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Joined
Sep 9, 2012
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Good morning. I have a 2012 2500. EFI live,464 turbo.airdog 150, GDP 150 injectors, ATS twin fueler...
I have searched and can't find an answer. Dynoed the truck for tuning and it is dumping the fuel at 2600 to 2900 rpm. I have tried shimming the factory rail plug and have tried the race plug also. Same results. I have also changed the belt on the cp3. Herve looked for boost leaks and don't think there are any, not sure exactly how to check. I have 28000psi rail until the abrupt dump. Any help would be greatly appreciated.

Thank you
 
Last edited:
I would bet it's in the tuning. Does it come back at all? We have some good tuners floating around on the forums maybe one of them will chime in soon.
 
How much does it lose? And does rail pressure slowly climb back up, or does it never recover?
 
Maybe the cp3 controller? Get the tuner to help you diagnose it.
 
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