silencers PLEASE HELP

not a chance i never even jetted it when i put the compet just moved it up a notch on the needle but to anwser you question no
 
depends on the type of silencer. Fmf power core 2s hook up to a stock pipe as do most dg silencers. As for performance gain, you wont see much from just a silencer and it will be a little louder but still sound like a stock blaster.
 
powercore 2 is an fmf silencer. Pro circuit is about the same for the silencer, but in my opinion pro circuit pipes are better than fmf.