Constructed purely from 304 Stainless Steel, this system features our cast stainless steel bellmouth to mandrel bent 3" piping, a state-of-the-art metallic substrate catalytic converter, a stock-style flex gasket, our low restriction straight-through muffler that tucks up nicely under the car and ends in a tasteful but not overstated 3.5" double wall tip featuring an etched COBB logo. Some Frequently Asked Questions… Q: Will this unit void my factory warranty? A: As with any performance product offered in the aftermarket, we cannot guarantee that any of our parts are eligible to be warranty friendly. This is something more left to your local dealership and their stance on modifications. Q: How much horsepower will this unit yield for my vehicle? A: An estimate of 8-12 horsepower can be expected from the Turbo Back Exhaust, without the use of any form of engine management(not recommended). Q: How loud is this unit? A: The COBB Exhaust systems conform to the SAE dictated 95-devibel exhaust noise level limit enforced by California, as well as other states in the US.