is anyone here, running a external wastegate?
What is the uaual recommended boost level for switching from an internal to an external?
the reason I ask is, I am running 22+ pounds, and I have a 2.5 exhaust, catless and muffler less. running an internal wastegate... Ive eben talking to some local evo owners who asked why im not running a external. then I asked why switch? One of them said that if I went with an external unit, and had an open dump, it would be equivalent of a 3.0+" exhaust and keeping the 2.5" on, because the volume of the dump tube is not being pushed into the exhaust, thus freeing up airspace that is used by an internal unit, or an external that flows back into the exhaust.. this makes sense but im wondering what all your takes are on this...