Can anyone tell me what exactly this is? Thanks!

 

purge solenoid is for the fuel vapor on the evap system, i belive. why? whats up?

 

alright thanks, i knew it was related to that. well my buddy has a 94 accord, same f22 set up, and he took out his "charcoal cannister" and taped off hoses running to it to keep the vacuum. his car ran smoother and told me to do it to mine. so of course i did and now my heat doesnt work? haha idk what's up.

 

Did you mess up the heater core hoses in the process?

 

i may have, i'll check

 

if it was the hoses it'd be leaking antifreeze.
check the heater valve it's in the same area as the bottom of canister, might of dissconnected the wire that controls it(looks like a bike brake cable)
also on a side note, i don't think you should dissconnect the charcoal canister. if honda thought it nessary for one, ya know.
also the only real way to tell if it makes any differece is to dyno it before and after.