Introducing the Tomei Expreme Un-Equal Length Header for the 2015+ Wrx
Get that boxer rumble you've been wanting for your FA since the day you bought the car!
The OEM headers greatly restrictair flow right after the engine port.
The turbo side of the OEM headers severely restricts the flow of the exhaust gas, resulting in loss of power and efficiency.
The collector on the Tomei headers were made using the lost wax method. The lost wax method allows the collector pipes to merge smoothly, therefore eliminating any restrictions on the header.