Performance header provide each cylinder with its own mini exhaust pipe, which means exhaust headers prevent interference among cylinders; thus, the backpressure that occurs in common exhaust manifolds. When cylinders don't have to fight with each other to expel their exhaust, they can put more power through the wheels, pushing the engine to the full potential.
Made of High Quality T304 Stainless Steel Material
Inlet/ Outlet: 1.50"/ 2.00"
O2 Sensor Insertion and Metal Gasket Included
TIG Welded CNC Machine Flange
Increase High Flow Air, Instantly Gain 10 -15 Hp. / Tq.
100% Brand New
Professional Installation is Highly Recommended (No Instruction Included)
Fitment: 02-07 Subaru Impreza WRX/WRX STI
The stock catalytic converter is meant to filter the flow of exhaust gases to reduce the amount of harmful gases into the atmosphere. Because of this, lots of potential performance is restrained. High Flow Test Pipes eliminate the stock catalytic converter and reduce exhaust backpressure. The result brings out the vehicles performance potential by giving it a free high flowing exhaust system.
Increase High Flow Air and Maximize Performance,
Dyno Proven Increases Low End Torque and Horse Powers; Instant Gain up to 10~15 Hp. / Tq.
Made of High Quality T304 Polished Stainless Steel Material
TIG Welded CNC Machine Mandrel-Bent Tubing
Inlet Size: 4.375" x 2.25" (Oval) / Outlet Size: 3"
O2 Sensor Bung Insertion and Metal Gasket Included