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  1. Slow Throttle Response

    01-04.5 LB7 Performance Parts Discussion
    I've added a AFE Stage 2 Si Cold Air Intake to my '03 LB7 and have had slow throttle response ever since. I can go back to my stock air box and response returns. AFE guys have been great but cannot explain why this is occuring to my truck. I have tried cleaning the Mass-Air Flow sensor with CRC...
  2. LB7 Smokes and has no power but NOT injectors!

    911 Problems Forum
    I bought a 2002 duramax with a blown motor, I bought a motor for it out of a rollover that seemed to run fine when I went and looked at it but now that its in my truck it has no power and smokes like crazy-grey smoke at idle and black on acceleration. At first I though it would be the common...
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