02-06 Nissan Sentra 2.5 Ser Se-R Spec-V Stainless Racing Manifold Header Exhaust

• Product By DNA Motoring | SKU: HDS-NS02SER
• Aftermarket Exhaust Header For 2002-2005 Nissan Sentra SE-R SPEC V B15 2.5L DOHC
• 4-1 Racing design
• O2 sensor & EGR bung insertion; Metal gasket included
• 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).

Headers are one of the easiest bolt-on accessories you can use to improve an engine's performance. The goal of headers is to make it easier for the engine to push exhaust gases out of the cylinders.

When you look at the four-stroke cycle in How Car Engines Work, you can see that the engine produces all of its power during the power stroke. The gasoline in the cylinder burns and expands during this stroke, generating power. The other three strokes are necessary evils required to make the power stroke possible. If these three strokes consume power, they are a drain on the engine.