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Home » Subaru WRX/STI » Electronics » Boost Controllers   Turbosmart Boost Single Stage Manual Boost Controller for WRX/STI Fast boost response with a single adjustable boost level. Switch between standard and high boost on the fly. Ideal for turbo cars without factory boost controllers. High boost setting fully adjustable. Supplied with all fitting hardware and a Rocket Launcher Switch.     Price: $155.00   « Previous | Next »