#1
is there a pedal that can boost ur sound output so that u can go from like a rythm standpoint so shreading lead
#2
A booster pedal.

Something like the EHX Linear Power Booster.

Or, get a cheap overdrive pedal, turn the level up.. gain down.. and tone wherever you like.

Edit: For leads to cut through, you're better off using an EQ pedal to boost your mids and treble when your solo comes along, instead of just trying to be louder than everyone else.