would this run circles around my fmf?

You would feel a good bit more power in the mid and top end power. You would have to rejet for that pipe over the FMF pipe.
 
mine is jetted for my fmf, i have personaly never pulled the carb off but it does not run lean or rich it seems pretty good
 
Well that's Probably the reason , Most people with blaster parts Either think there gold , Or there trying to get what they can out of it , That's what i see these days
 
That pipe compared to your fatty would be like chaining your blaster to a stump!

The factory seven is worlds beyond the fmf fatty.

Fatty's are good low buck upgrade alternatives to the stocker but if you got any serious plans for the motor get a good pipe before hand.

That pipe on a stock blaster would be awesome any performance upgrades will just make you appreciate it all the more.

I say get it bro you wont be disappointed.
 
love mine....got it 2nd hand and love it. the FMF doesn't get a fair comparison because it had too big of a carb at the time, but i still think it will run better all around