Hi im nearly finished on my swap from a b16a2 to a b18c. I have bought a 70mm throttle body and i have switched the map sensor across and the TPS, there is one vacuum type line remaining that attached to the b18c TB correct me im wrong is it a fuel vapour line or somthing. I cant find a spot for it on the TB is it ok if i block it and leave it any advice

 

if it is from the vent cannister on the firewall, just let it vent to atmosphere.