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flowmaster 40

  1. Flowmaster 40 vs SLP loudmouth 2

    Intake & Exhaust
    SLP LM2 on my Mustang Cobra https://www.youtube.com/watch?v=zVf3Vpvx7-g&list=UULaOHlLeI1nGs5_HXGzsbLA Cobra had no cats, hence why its louder at idle. SLP LM1 on my Challenger https://www.youtube.com/watch?v=-A2_yTZ1xvA Has stock mid pipe/cats and stock headers.
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