Ross Performance Subaru EJ20 / EJ25 Harmonic Damper AMG probably due to the better

probably due to the better cams and the fact that the stock ECU runs so rich at the top end

Shipping times vary depending if the part is in stock at our warehouse and which shipping option is chosen at checkout

Notes 02-14 Subaru WRX 2L/2

This ECU works with manual transmissions only

Not only does this benefit the life of the connecting rod bearing and journal on the crankshaft

Ross Performance Subaru EJ20 / EJ25 Harmonic Damper AMG probably due to the betterRated for 600hp Maintains OEM pulley diameters, locations and profiles Suitable for high performance street applications Designed and manufactured in house using CMM, 3D modelling and state of the art CNC technology Bonded using our proprietary Ross Tuffbond process incorporating anti vibration, anti tear natural rubber Laser etched 360 timing marks High quality black finishes Seamless integration with our trigger disc and dry sump drive adaptor