External wastegate on an S5 Tii stock setup

[classicauto]

Much harder to do on an S5 than an S4. Most difficult part is welding onto the cast manifold......HUGE BITCH! I ran a VW wastegate on my stock turbo years ago, it was an S4 though. Much easier to locate the wastegate on that layout.

It can be done on an S5 setup, search for blueTII posts about his HKS 60mm? setup on his hybrid stock turbo on the evilforum.