Clean 2g DSM with open wastegate

This vid demonstrates the how spring rate and spring pre-load work on a wastegate. This is a good primer for understanding how springs operate in application

Subaru WRX STI 38mm External Wastegate. 8lb spring NO TIMING NO BOOST 9:1 AFRS

This video shows that most diaphragm wastegates don't seal very well. The Synchronic wastegate is designed to seal in boost.

Sierra Cosworth with Wastegate Chatter boot`s it up and down the street.

Ignition DVD takes a look at wastegates with GCG Turbo's. Internal, external how they work and all the parts involved.

Turbo 2110cc type 1 VW at 7lbs on pump gas. check out the wastegate open and the sound change! Notice how the motor make the same numbers over and over on the dyno. VWTurboKits.com

ENGINE 3,000km LAPPING plus SETTING. FD HOUSING FD EXCENTRIC ROTOR FOR High frequency processing PORT PROCESS FOR T88 TURBINE T88-33D EXHAUST MANIFOLD 60mm TWIN WASTEGATE SPECIAL (ONE OFF) TRUST TYPE R WASTEGATE x 2 FRONT PIPE 94mm MUFFLER 100mm STAINLESS (ONE OFF) INJECTOR 720 x 4 440 x 2 FUEL.... more

Here we see what should not be done on an internal wastegate setup, which ultimately lead to the customers engine blowing from overboosting

www.vividracing.com showcases it's 996TT beast with External Wastegates.