I think the "hiss" sounds cool... but that's just me. I have Berk test pipes and they are not leaking...still have the hiss when letting off the throttle.
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2014 370z Nismo Fairlady | Gold Powdercoated Nismo Rays | Z1 Ported Manifold | RJM Adjustable Clutch Pedal | Berk Test Pipes | Beluga Racing Exhaust | Custom Billetworkz Imperial Sledge Shift Knob | Carbon Fiber, Flat-Bottom Steering Wheel | Ecu-Tek Custom Tune
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