would it be wise to add an afc and a mbc without full exhaust from the start. would it be possible to push 17-19 psi on the stock exhaust with these components and how to i get rid of the stock bcs. i heard a rumor that there are little restrictor beads in the vacuum hoses from the turbo to the intake tube(or something like that) to cut down on boost. is this true. any help would be great