D Series 4-1 Hood Exit Race Exit Header Honda Acura EG EK DC2 Civic D16Y8 D16Z6 Fuel Cut Displays your vehicle's compression

Displays your vehicle's compression

2014-2015 Audi S4 Prestige Sedan 4-Door

1968-1971 Chevrolet Chevelle Concours L6 4

Applications: K20Z3 and most K24 heads (Excluding K24A1)

2004-2020 Subaru WRX STI (6-Speed Manual)

D Series 4-1 Hood Exit Race Exit Header Honda Acura EG EK DC2 Civic D16Y8 D16Z6 Fuel Cut Displays your vehicle's compressionD Series 4 1 Hood Exit Race Exit Header Honda Acura D15 D16 EG EK DC2 CRX Si D Series hood exit race header (4 1 Megaphone) features a true 4 1 Megaphone merge to create equal exhaust flow. A megaphone is added next, to release pressure and increase the speed of the exiting exhaust gases. A small reverse cone is placed at the very end to provide a tiny bit of wanted back pressure. This header delivers the best peak horsepower gains while utilizing a 2