Mike's 1981 300TD wagon
Mike's 1981 300TD wagon
I guess I'm wondering why people don't just put external wastegates onto the EGR port on the manifold. One could also just actuate the existing EGR valve some other way (I can't recall how it is actuated, but if it only opens at high RPM, one could even use the EGR setup as a wastegate). The port isn't 38mm, but it would double the size of an internal wastegate and help feed a compound turbo setup. It is probably 20-25mm.