99-00 Honda Civic Si Em1 B16A2 4-1 Stainless Racing Manifold Header Exhaust

• Product By DNA Motoring | SKU: HDS-HC99SI-41
• **Note: Requires Aftermarket Test Pipe with Bigger Piping in order to Bolt On**
• Aftermarket Exhaust Header For Honda Civic Si 1.6L DOHC B16A2/ B16A3 (1999-00) / Honda Del Sol VTEC 1.6L DOHC B16A2/ B16A3 (1993-97)
• 4-1 High Performance JDM Racing Spec. Design
• Made of High Quality T-304 Stainless Steel with Computerized Mandrel-Bends
• Maximizing Smoothest High Exhaust Air Flow Rate
• Design to Reduce Air Flow Restriction To Achieve Higher Horsepower and Throttle Respond
• TIG Welded CNC Machine Flange for Resistance against Pressure and Corrosion
• Provide Aggressive Deeper Exhaust Note
• Direct Bolt-On Installation, Requires No Modification.
• Professional Installation is Highly Recommended (No Instruction Included).

The exhaust manifold found on the 1999-2000 Honda Civic B16 DOHC 4 Cylinder Engines were designed to combine the exhaust gasses from each of the cylinders quickly with a manifold that was cost effective to produce. Our 4-1 off-road racing headers are designed to allow the exhaust gasses to flow more freely from each cylinder and combine in a more efficient manner. Tubing has been optimized for the 1.6L engines. This creates a reduction in cylinder backpressure and improved exhaust gas velocity. These improvements free up lost horsepower and torque. An added benefit is a more performance oriented exhaust sound.