thanks people
going to be having a new exhaust saturday..
decided to go side exit so i can run a flat floor and diffuser.. should be fun with the launch control with the side exit
the milltek did well on the dyno and has still made well over 500hp but im sure its restriciting the big blower as it tapers down to 2.75 and sometimes less in places, how much i dont know.. might have a 3.5" downpipe aswell