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  1. N

    2004 lb7 help!!!!!!

    I didn't touch the injector cups when I replaced the injectors. The problem has been the same through all the repairs.
  2. N

    2004 lb7 help!!!!!!

    I have a 2004 Chevy ecsb lb7. Has 4 in exhaust, boost increase valve, air intake heater delete, S&B intake, and no programmer or tunes. I bought the truck almost a year ago. When I bought it it had high balance rates and a slight injector knock... I tried the GM upper engine cleaner trick to see...
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