Tomei EJ255-EJ257 Unequal-Length Header for Single Scroll Boost Control Outfront Motorsports billet fuel rail

Outfront Motorsports billet fuel rail kit fits the WRX/STI Top Feed intake manifolds with no additional adapters

We are perticular about the welding and exhaust efficiency is improved very much

Successful race engine builders are constantly pushing the limits of load capacity to new levels

Every Header setup is inspected

2 x Trigger Inputs

Tomei EJ255-EJ257 Unequal-Length Header for Single Scroll Boost Control Outfront Motorsports billet fuel railHigh Efficiency 4 1 Type We introduced the high efficiency 4 1 as against the STD 4 2 1. The exhaust efficency of the standard exhaust manifold is not perfect. But Tomei 4 1 type exhaust manifold has high efficency. You could see the change of dramatically driving feeling. Not Equal Length Design The complete equal length is good for the exhaust intervention but reduce the turbine performance and increase the exhaust resistance. Contrary to that, the