DIY Door Latch: Build Your Own!

Hi.

Does anyone know of other manufacturers that install the simplest possible single diverter valves?

VW has these EGR units that are designed to be shut off, and now they even have throttle valves and cooling systems, which I don't need because I don't use the EGR function.

I just need something that can modify my intake manifold.

"Thank you."
m;