Exhaust systems also play a role in reducing noise levels, improving engine performance and reducing fuel consumption. To get the power level up to 785 hp, Shelby installs a Ford Performance supercharger, as well as a new carbon-fiber air intake tube, high-performance fuel injectors, and an aluminum heat exchanger. A Borla (cat-back) exhaust system rounds out the list of powertrain modifications.

Video Features Options Short video of our 3” Catback Exhaust for the 07+ Honda Civic Si Sedan. Note that this was installed on a naturally aspirated setup (stock header and… Already own an&nbsp