ScienceofSpeed Ultra-High Output Forced Induction Exhaust System - NSX, 1991-05

Ideal for supercharged or twin turbocharged applications in excess of 475 BHP and up to 700 BHP, the ScienceofSpeed Ultra-High Output Forced Induction Exhaust System allows for increased flow with minimal backpressure. 

Designed & manufactured by ScienceofSpeed - a unique exhaust design was employed to provide a 3" header-back exhaust system consisting of pre-muffler assemblies and the exhaust muffler assembly designed to work together. The pre-muffler assemblies, which include ultra-high output catalytic converters, join the exhaust assembly, available with a single exhaust muffler designed by ScienceofSpeed. This design allows the exhaust system to mount to factory and aftermarket headers for supercharged applications and ScienceofSpeed Twin Turbocharged downpipes. The catalytic converters are EPA certified. The catalytic converters are not CARB certified and can not be used in the state of California.

The system is designed to flow up 81 LB/MIN of airflow (approximately 700 HP). For applications less 475 horsepower, the ScienceofSpeed High Output Catalytic Converter Set is available.

Compatible Headers / Downpipes:

• Any aftermarket header system designed for 1991-99 NSX with ball-socket type joints.
• Factory 1995-99 headers.
• ScienceofSpeed Twin Turbocharger System downpipes.

Please note: Both the muffler assembly and pre-muffler assemblies are required as the flanges differ from factory to accommodate the high-flow 3" tube size.