Your new GS350 Boost Controller can keep your Buick sparkling. Adjust your turbo's power with a Boost Controller. Check out of our full line of GS350 Boost Controller. Choose the amount of boost with the Boost Controller for the optimum setup. Got an idea for your GS350 Boost Controller, check out our selection. A Boost Controller is easily adjusted and easily installed. Make your engine the best it can be with a new Boost Controller.