Factory 7 exhaust

I have rode a blaster with FMF. but I have not rode a blaster with toomey

but the F7 makes alot of lowend power a ton of mid power and a lot on top
 
the actual reason that it is better is because it is a right bend pipe, as opposed to a left bend like the stock one and fmf and toomey. Toomey is fine for a stock motor, but when u start to mod, right bend lets more air flow, so it is better
 
with a UNI airfilter outerwears airbox cover I used a 290 main, to turs out on the airscrew