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zoomers needs tune

  1. 1st Gen SRT8-Specific Performance & Engine/Intake/
    Hello guys I have 300c SRT8 6.1 with AFE intake & Zoomers exhaust, and I'm wondering if: 1. I really need a diablosport tune? 2. if I have lost power with the exhaust if the car is not tuned? 3. if I gained any power from the exhaust without a tune? 4. if I'm going to see a power difference...