dr. d all the way.. check it out on dirtwheels. they had a pipe shoot out for the yfz. dr. d won!

 

just bc it was quiet right? I think that is the reason....it is a good pipe but I think it said the HMF was at the top if it wasn't so loud. They still have this article on dirtwheels.com website. Check it out and it will give some more input...I don't think the sparks was on it though

 

the HMF isn't loud till you get on it

 

I am aware, I have one.[img]i/expressions/face-icon-small-wink.gif[/img]

 

Sparks or CT are your 2 best bets...If at any point in the future you wish to build the motor ...these are the only 2 really great pipes that will handle the extra h.p.. And of these 2...I prefer the Sparks.Just my opinion...so all you other guys...chill.

 

My Dr. D is holding up really well, I don't really see the diference in a complete system and a slip-on.

 

Curtis Sparks

 

just some food for thought, Yoshi is a pretty good exhaust , and also the new DMC Full system is getting about 8hp gain and staying under the 94 decibels. Its not a shootout, but in the ATV SPORT Magazine they have a thing article about exhausts and tells you the horsepower for different bikes, the price of each exhaust, it was good to read because they did the article as a review of each one , and not just a comparison to others

 

my friends uncles raptor has a ct pipe kit it makes about 101-102 db's

 

I dont know numbers for either, but I know that the HMF is CRAZY loud! Even louder than the DR. D. Anyway, I like the LRD the best. Average of 7 hp increase and (i think) 9lbs of tourque. It also sounds really deep and smooth, and is around 96dbs. That's what I'm gonna get next!