My original plan was to have 2.5’’ custom mandrel piping, with my own muffler. My brother was accidently shipped the wrong exhaust (the GT2 instead of the EX-Mag) so now we have the GT2 sitting in our garage for no one to use.
He still wants the EX-Mag, so our options are to send the GT2 back or me use it for turbo. Since the GT2 has 60mm piping, it’s a tad smaller than 2.5’’ BUT, the stock routing of the piping is rather hectic. I would take this route for the custom 2.5’’ exhaust. The GT2 has only 1 bend in it.
My thoughts are since it’s only 1 bend as opposed to about 3-4 wouldn’t this basically equal out to the flowing of a 2.5’’?