Capristo Ferrari 348 Cat Delete Pipes The original single bypass valve

The original single bypass valve also did not flow enough gasses at full throttle

That’s the reason why the F355 does not provide the power as indicated

it is IMPERATIVE to remove all OEM mountings - You must use the exhaust bracket provided with your exhaust

The electrical connections from your original wiring harness

Capristo Ferrari 348 Cat Delete Pipes The original single bypass valveThese lightweight test pipes fit in place of the heavy OEM catalytic converters. Using a test pipes removes the flow restriction a catalytic converter places on an exhaust system, while increasing the horsepower. The silencing effect of the converters are also removed, enhancing the aggressive engine sound. Test pipes are ideal for track days and race application. On applicable models, the center section is made flexible as an added protection feature