Have you dynoed your R/T after installing the exhaust to see if you picked up or lost power? Do you have a boost gauge or able to log your boost to compare them?I replaced my stock R/T 2/14" Exhaust with 3" Hellcat pipes from the Cats back. Sound is louder with more rumble. Wondering if the 3" pipes has lowered my boost so that I'll need a smaller pully for my Procharger?