IT IS HARD TO SAY BECAUSE I ALSO UPGRADED TO 4 28X12X14 RADIAL TIRES. THESE ARE HEAVY AND REALLY HOOK UP. WITH THAT SAID, I DO NOT NOTICE ANY POWER LOSE. I THINK FOR THE SAME MONEY YOU WOULD GET MORE BANG WITH A WEB CAM. IT IS ABOUT $250 FOR THE CAM AND $350 FOR THE INSTALL AT MY LOCAL DEALER. I HAVE ABOUT THIS MUCH INVESTED IN PIPE INSTALLED AND THE PCIII. IT IS COOL TO HAVE A ONE OF A KIND SET UP THOUGH.

what kind of gains did u see when u added the exhaust and the pc iii , im in need of low end tork on realy steep hills carrying lots of weight