GrimmSpeed + Turbosmart 38mm EWG 2-Bolt Uppipe Wastegate Kit Subaru WRX / STI / Forester XT / Legacy GT
Here is an excellent external wastegate/uppipe combination to help you maintain consistent boost levels, and boost control.
Grimmspeed will provide the uppipe, while Turbosmart will provide their blue version of the 38/40mm external wastegate. Note that the wastegate is 40mm, however it will fit a 38mm flange.
Included in this kit is Grimmspeeds uppipe. This is uncoated, and comes with a flex joint. Also included along with Turbosmart’s wastegate is a dump tube, and the necessary v-band clamps to connect everything together. You would need to provide your own uppipe gaskets to complete the installation.
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