Tomei Expreme Exhaust Manifold - Subaru EJ205/207/255/257 Unequal Length For Single Scroll Hardware Individual cylinder ignition retard and

Individual cylinder ignition retard and fuel enrich

Post Start Enrichment

including paint

the car will be highly responsive and comply with the driver's every instruction

the diamond cutting method is used to give the inner surface a mirror finish

Tomei Expreme Exhaust Manifold - Subaru EJ205/207/255/257 Unequal Length For Single Scroll Hardware Individual cylinder ignition retard andWe 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. The complete equal length is good for the exhaust intervention but reduce the turbine performance and increase the exhaust resistance. Contrary to that, the not equal length exhaust manifold can lead the