Yeah, they all claim it. I guess what concerns me is I think back to the Birth Of The V-Rod show. A few things gave them a bit of a headache and one was the exhaust. Now, I am no mechanic, but Harley said the thing sucked in big air, hence it need to let it out (the reason for the moved gas tank). Im guessing the pipes are that big for that purpose, otherwise, theres a ton of ways they could have went that would have looked great. So, wouldnt any small pipe be restrictive to the motor?
P.S I just posted a mpg of the V-mod pipes in this thread as well as my first impressions:
http://209.151.86.249/forums/showthread.php?s=&postid=51588#post51588
Looking back, if I had started here, I would have saved 500 on the Screaming Eagles, 450 on the Supertrapps and 379 for the Power Commander, 149 for the Stage 1 download (twice) plus all the labor to change my mind. Instead it would have costed me 150 for the mod, 149 for the stage 1 and maybe 75 for labor. Im making sure I let people know about my experience with the pipes and hope this helps someone.