The new Ultra-Gate38 is a 38mm external wastegate for street and racing applications. Designed with minimum size and maximum flow in mind, the new Ultra-Gate38 is smaller and lighter than the previous model and features Turbosmart’s unique locking collar design for quicker spring changes and a one piece, stainless steel valve.
The most common reason for investing in an external wastegate is fitting an after-market turbo or better control of the boost and consequently the power output of your engine. Additionally, most large frame turbochargers are not equipped with internal wastegate systems. Most tuners will recommend an external wastegate for any engine producing 400hp or more.