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  1. M

    Hello, I have a 07.5 duramax with an afe 4" straight pipe, afe cold air intake, & black max...

    Hello, I have a 07.5 duramax with an afe 4" straight pipe, afe cold air intake, & black max tuner. When it idles it goes from a nice low rumble to a loud hiss then back again. What is causing this & how can I stop it?
  2. M

    I have a 07.5 6.6 duramax with dpf problems. What dpf delete exhaust system, tuner, & cold air...

    I have a 07.5 6.6 duramax with dpf problems. What dpf delete exhaust system, tuner, & cold air intake system do you recommend?
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