Dealer says the only way to go is with the Dynoport, the other dealer says the mbrp is the way to go? Any advice would be awsome! I definitly want something that sounds killer!

go with a mbrp or slp

TRY THE THING OR THE QUIET THING FROM BOULDER MOUNTAIN SLED SHED. CHECK OUT HIS WEB SITE www.thesledshed.ca
AL KNOWS HIS STUFF, SOUND IS GREAT, SURE SEEMS TO HELP MY FUEL ECONOMY.
HERE IS HIS PHONE NUMBER 250-814-0018.
I HAVE BEEN RUNNING HIS CAN IN MY LAST TWO SLEDS , WORKS AWESOME.
GOOD RIDING.

Awsome, thanks for the tip, how are ya liking the sound of your thing can on the 800R?

Dynoport !

Did testing infield with 05 summit 600, have three so can pull parts run them side by side and see what is working and what does not, dynoport cans work.

must be a north thing,, south of the border 95 % use the HPS...

whats about J&T ???

I like MBRP. Makes a nice sound as well. SLP's are also common and nice sounding. I think the performance is about the same across the board.

Your going to get at least one person giving opinions for each type made. Your best bet is too go out on the trails find sleds like yours and ask and listen to the can.

SLP won't be out for another month.