Muffler Exhaust Catback System For Acura Integra GSR DC1 DC2 (1994-2001)

High-Flow Scavenging for the B18C1: N1 Style Performance Exhaust

Who It’s For: Engineered for Acura Integra GS-R owners running the legendary B18C1 powerplant who are tired of the restrictive, whisper-quiet factory plumbing choking their VTEC transition.

The Symptom: The factory exhaust on the B18C1 was designed to meet 1990s drive-by noise standards, not to maximize the high-revving nature of a DOHC VTEC head. By using small-diameter piping and heavy, baffled mufflers, the stock system creates significant backpressure. This bottleneck prevents the engine from effectively clearing spent exhaust gases during the valve overlap period, resulting in a sluggish feel when you’re trying to climb toward that 8,000 RPM redline.

The Engineering Fix: This N1-style system utilizes a straight-through canister design to minimize turbulence and maximize exhaust gas velocity. By replacing the restrictive factory resonators with mandrel-bent stainless steel tubing, we improve the scavenging effect—literally using the momentum of exiting exhaust pulses to pull more fresh air into the combustion chamber. The result is a system that allows the engine to breathe freely, providing a sharper throttle response and the iconic aggressive roar that Integra enthusiasts demand.

Why Mechanics Choose This Kit

• Optimized Flow Dynamics: By reducing pumping losses, this system can provide gains of up to 15 horsepower, specifically helping the engine maintain its torque curve after the VTEC solenoid engages.
• The N1 Resonance: Designed with a 4" polished outlet tip, this system produces a deep, resonant tone at idle that transforms into a crisp, metallic scream under wide-open throttle.
• Precision Construction: High-quality stainless steel paired with C.N.C. machined flanges ensures the system won’t warp under high heat, maintaining a perfect, leak-free seal for years of spirited driving.

Technical Specifications

Compatibility & OEM Reference

Fits the Following Vehicles:

• 1994 Acura Integra GS-R 3-Door Hatchback (B18C1)
• 1995 Acura Integra GS-R 3-Door Hatchback (B18C1)
• 1996 Acura Integra GS-R 3-Door Hatchback (B18C1)
• 1997 Acura Integra GS-R 3-Door Hatchback (B18C1)
• 1998 Acura Integra GS-R 3-Door Hatchback (B18C1)
• 1999 Acura Integra GS-R 3-Door Hatchback (B18C1)
• 2000 Acura Integra GS-R 3-Door Hatchback (B18C1)
• 2001 Acura Integra GS-R 3-Door Hatchback (B18C1)

Interchange Reference:

DC1, DC2, GSR-CAT-N1, 94-01-INTEGRA-GSR-3DR

The Performance Promise

Buy with confidence. This system is a direct-bolt-on upgrade that includes all necessary gaskets and hardware. We recommend professional installation to ensure perfect alignment with your chassis hangers. Backed by real automotive experts and fast shipping.