Take pride in your Buick with new GS400 Turbo Timers. Keep your turbo from prematurely extinguishing with a Turbo Timer. Bring the Buick back to life with new GS400 Turbo Timers. The Turbo Timer keeps the engine idling after the key has been taken out. Keep your classic looking new with GS400 Turbo Timers. A Turbo Timer allows the oils to cool down without harming your turbo. Take care of your engine today and get a Turbo Timer.