[nverlast1]

if i install two brothers single pipe on spyder gs do i need juice box too? not tryin to have superfast bike just more for sound

[rrman01]

hey i ran my 2bros with out the juice box ran good then got the first jb that is a fule only mix and it goes great and then there is the jb pro that dose fule and air mixtures so you dont really need one but if you do then you need to change the air filter as well and then the bike will kick &#@

[willpower25]

i have an 08 rs and i put the dual two brothers pipe on, it was getting way to much fuel, about 4000 rpms it would just stubble, so i put the juice box on and it was much much better, didnt add much power just maybe a lil throttle response. the bike runs better then when it was new, personally i would put it on, not for the performance but just to make sure the bike is running like it should. and ive never put an air filter on, ive never heard if you put a juice box on u gotta put an air filter.