I'm by no means smart on this stuff,but I try to watch listen & learn.''That's why I'm on this site'' Anyway I don't know if you have it,but we have a show down here on spike tv called horsepower tv.These guys try to get as much horse as they can out of every thing they have. The fisrt thing they always do is install larger pipes.They say the less restriction the better.They like a 2 inch exhast system and the dino test uselly shows an extra 12 horses or more.Sounds like they might be on to something.