I’ve been waiting for some time for Turbo Concepts to finish the development of their billet wastegate actuators and with the arrival of the FrankenTurbos I had the itch to try out some different wastegate actuators.  After some searching I came across these and decided to give them a try.

The Mamba wastegate actuators are built for the B5 S4 and outwardly look to be a quality product.  Hopefully they perform as well as they look.