Car Exhaust Header Manifold Collect Gas From Cylinders and Discharge Out. It will purge out excessive combustion gas and retain adequate pressure for power.
HKS EXHAUST MANIFOLD LANCER EVO CN9A IV 4G63 1419-RM001 basically balance up 2 variables simultaneously. It will discharge the gas faster and at the same time will retain some pressure in order to avoid power loss during discharging process.
HONDA K20A EXHAUST MANIFOLD 4-2-1 TODA RACING 18100-DC5-00J will increase effectiveness of exhaust discharge, manage the turbulence and resonance better.
