Home > Subaru > STi (2004-07) > Power > Staged Power Packages > Staged Power Packages

Staged Power Packages

This is where to start your quest for additional power and response from the STI. Included in the Stage 1 kit is the highly regarded AccessPORT which is used to reprogram the factory engine computer, unlocking an additional 25 HP (power) and 40 lb-ft (torque) from a STI and increases boost from 14.5psi to approximately 16psi.

The Stage 2 Kit continues where the Stage 1 Kit leaves off. Included with Stage 2 is the AccessPORT, as well as the complete COBB Tuning Turbo Back Exhuast. Starting off the COBB Turbo Back system is the COBB Downpipe. The CAD designed bellmouth of the COBB downpipe makes sure the airflow is smooth and efficiant. The system finishes with the modest tip of the Cat Back section that sits completely flush with the bumper. With a subtle, but deep exhaust note, the COBB exhaust achieves the highest performance while still retaining a stock like appearance.

		SS 3" Cat-Back Exhaust The COBB Tuning catback exhaust is heralded often for its quality, performance, and subtlety. Engineered to be a vehicle specific unit, the catback exhaust uses the highest quality stainless piping and a muffler designed for direct and efficient flow of exhaust to achieve the highest performance while still retaining a stock like appearance and sound level. $675.00
		Urethane Exhaust Hanger You do not want that new exhaust, that you just installed, to sway side to side under hard cornering do you? Of course not! You want that new exhaust to stay firmly in place during your commute to work just as well as when you are on the track! Our urethane hangers solve this dilemma! Note: Hangers are sold individually! (STi utilizes 4 exhaust hangers) $10.75