hey,
i need to know who makes a better pipe/siliencer fmf or pro-circuit? and i also need to know how much horespower they will add to my 2001 blaster. i mean will i be able to clearly realize the difference from these compared to my stock pipe/siliencer, or is it just a waste of money?

 

DO A SEARCH!!! ITS BEEN COVERED HUNDREDS OF TIMES!!

but to answer your question, they both suck. But if you have to choose between the 2, go for the pro circuit. Blaster Central has a dyno shootout from dirtwheels, but their site is down right now for updates.
The pipe that makes the most power is Power Pros, its cheaper too.

 

Out of all the aftermarket pipes i have seen tested, the fatty has the most low-end, although it is about the same as stock. The power comes on early ( at about 5000 rpm's i think)but there is NO TOP END! And the peak hp is only 18.5 . I don't know much about Pro Circuit. The best pipe is the Trinity or Power Pros pipe. The Trinity makes 20.3 peak hp. IT RIPS