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    Weak CP3

    Hey everyone. I’m new here and hope to find some answers to my questions. I have a ‘05 GMC Sierra 2500HD 4x4 CCSB LLY with delete, bigger turbo mouthpiece, up pipe, down pipe. I just replaced the FPR for the 3rd time. It starts up and idles great. When I take it down the road it won’t go over...
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