This exhaust manifold for the 1994-2001 Acura Integra 1.8L DOHC 4 Cylinder Engine 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 1.8L engine. 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.
Made of high quality coated mild steel with computerized mandrel-bends for strength and durability
4-1 high performance JDM racing spec. Design
O2 sensor bung insertion and metal gasket included
Increase high flow air, instantly gain 10 to 15 Hp. / Tq.
Cover with metallic paint for extra heat and wearing resistance
Includes:
1 x Set of exhaust header
All necessary hardware, bolts, and gaskets
Notes:
Honda Civic Si required modification for firment
Honda Del Sol V-TEC required modification for firment
100% Brand New
Professional Installation is Highly Recommended
Installation Instruction is NOT Included
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