i had my fass installed. its all hooked up right. they bypassed the factory canister. my question is the steel line on the back of the head goes to the fuel canister. so what now? how does that work if im bypassing it? do i just leave the drain **** open? where should that line go?

 

does the return line on back of head goto fuel tank or does it goto fuel canister?

 

thats kinda weird that i have the only FASS system. another thing i noticed is mine is super quiet. everyone was bashing how loud they are. i cant even tell mine is running, and i see 18 psi all day.

 

IIRC, the return line from the head goes to the canister return in the fuel tank.

The only return that goes to the factory canister that you bypassed is the rail valve retun line.

 

so the return line from head goes str8 to the tank or does it goto canister first? if you follow it with your hand it goes to canister first. whether or not it just gets clamped there and goes back to tank or if it actually drains into canister?

also the rail relief goes to back to the cp3