Subaru WRX STI Tuning Tools

Take your WRX STI to the next level with VividRacing's high performance engine components like pistons, rods & bearings, as well as Cold Air Intake, Suspension like Springs, Rods and Coilovers, to wheels, tires and anything else you could use to tune your WRX STI to the next level. For high performance upgrades for your WRX STI, VividRacing has you covered-- we're the #1 source on the web for WRX STI racing parts and upgrades, and our drive to be number one in customer service and delivery keeps our customers returning to us year after year. Even if you don't find what you're looking for, be sure to call us and speak with a WRX STI upgrade & racing specialist-- odds are we can help you locate the exact part you want.

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	AEM Series 2 Plug & Play EMS Manual Transmission Subaru WRX STI 2.5L \| 2458ccH4 TURBO [EJ257] 05-06 Model Number: 30-6821 View Price AEM's Series 2 EMS is a complete engine control system that plugs into the factory harness and uses the factory sensors. This means you do not need to replace any parts of the harness or sensors, just plug the EMS into the harness and begin tuning! The Series 2 EMS for the Subaru WRX allows you to control every aspect of your EJ25 from cam control to rev limit, timing, bigger injectors, boost control, nitrous injection, and individual cylinder fuel and timing trims. For drag racers there's...