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low rail pressure
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  1. 06-07 LBZ & LLY Duramax Powertrain
    I just fully deleted and tuned my lbz duramax will the HSP high flow bundle kit, and for some reason the truck now gives a check engine light (P0087) after 3,000 rpms. And I cannot figure out the problem. I just brought the truck in august with 275,000 miles on it. And it does have a airdog...
  2. 06-07 LBZ & LLY Duramax Powertrain
    Hey everyone, I have a 2007 Lbz creeping up on 190k miles. truck has been tuned through Ppei for the last 20k miles. I recently started having low fuel rail pressure. So far I have changed the fuel filter, and installed a Ppe race plug. In the 150 tune im seeing 26k desired rail pressure and...
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