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  1. General Discussion
    Hi all, I have a 2006 ecsb 4x4 dark metallic blue Chevy Silverado 2500hd, I have a s&b cold air intake, mbrp 5” straight pipe, and a ppe box tuner. My question is if anyone knows what could have caused my typical turbo noice of the “ear piercing” noise to change to a quick “whoosh” sound, all I...
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