ok my motor is dune ported and has the head milled .020 but other than that is stock. what exhaust would be better for my set up a toomey B1 or one of the dyno port exhaust systems?
dyno port would be better if you had a bunch more engine work done, but for what you have a toomey would probably be the better way to go (i run a dynoport) a LRD pipe would probably be your best bet, everyone seems to like those too. its up to you.
I ran a dyno port high volume on a completely stock motor. It ran great but the more mods you do to the motor, the better the pipe responds.
What kind of riding are you going to be doing with the quad? I think thats the first question you need to answer.
I too like the toomey kit, but I am going a different route. I like the LRD, DMC (afterburner), and CPI exhausts for the blaster. For one of my blasters I am most likely going to use the DMC. The engine that Angus is going to build for me is going to use a Vito's Fat Bastard (fitting name as I check in at 280#'s).