Turbosmart Gen V WG40 CompGate40 14 PSI External Wastegate - Black TS-0552-1012

The CompGate40 is Turbosmart's 40mm external wastegate — a half-step up from the usual 38mm gates, with enough extra flow to matter on builds where a 38 starts creeping. The Gen V revision brought a redesigned valve and seat plus water-cooling provisions, so it holds its setpoint on a hot manifold instead of drifting as heat soaks in.

Ships with a 14 psi spring, which puts base pressure high enough to be useful on a serious build without needing a swap out of the box. Springs are interchangeable if you want to land somewhere else. Black anodized alloy body.