D Series 4-1 Hood Exit Race Exit Header Honda Acura EG EK DC2 Civic D16Y8 D16Z6 Fuel Cut This flange adapter is the

This flange adapter is the special "Slim" flange which will perfectly fit Subaru WRX (2004-2007) & STi (2004-2017) models

Applications: K20Z3 and most K24 heads (Excluding K24A1)

* Wiring is required for LED DRLs to function

Packing Includes:

D Series 4-1 Hood Exit Race Exit Header Honda Acura EG EK DC2 Civic D16Y8 D16Z6 Fuel Cut This flange adapter is theD 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