I have a '94 civic ex with an obd2 b18b1. Where do the vacuum wires go, I have the one closest to the engine connected to the evap purge valve solenoid, the middle one plugged with a screw and the one closest to the firewall connected to what I believe is a fuel vacuum line. I am trying to figure out where the middle hose goes, because it is a long small hose.

y dont u just take out the canister it doesnt really do anything

that middle one goes to your tb.rite on top center. i think its for the map

Thanks for the pic man, but with my throttle body and it does not have that.

just let it hang or get one of those plug things to make it look clean. thats what i did with mine.

I have a feeling that it may be contributing to my horrible gas mileage.

it might but not to really notice it. have you added anything to your motor?also the b18 is bigger then the z6 so it will eat up gas alittle bit more. how many miles per gallon do u get now?

I know that it is bigger. I had an ls vtec that was getting 240 miles per tank on a virgin p28. Now as soon as I put the str8 b18b1 in the gas mileage goes to 160

I realized the hose on my canister is supposed to be part of the pcv system. The b18b1 I have is obd2 so it does not have the black box on the back of it. So what do I connect this to?