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Replacing the chambered transverse rear silencer with freeflow harmonically tuned silencers enriches the sound
Will not trigger check engine light
PURCHASE DISCLAIMER: Fabspeed Motorsport does not condone the use of emission defeat devices for any vehicles used on public streets or roadways
removal of these
Kline Innovation Porsche 997 Carrera 3.6 100cell X pipe section BMW-420i-2021 Replacing the chambered transverse rearThe first point that stood out, was the catalyst design. 600 cell oem cats, and absolutely no balance present in the factory exhaust. replacing this unit for a 200 or 100 cell sports catalyst we were able to achieve some moderate power and torque gains. the second design alteration was to remodel the way in which the exhaust gases interact from opposing banks. Replacing the two piece design for a single piece with our trademark tight radius, laminar
