Rb25det Neo Plenum Hoses

[Space Goat]

hi...

i have a outlet pipe coming out of my plenum that doesn't have a home and i dont want to leave it open... the hosetail would only fit maybe 4mm inside diameter hose so i think it might be for cruise control or something... it comes out next to where the brake vacuum hose comes out of at first i thought it was for the purge line for the charcol canister but when consulting the manual discovered that the purge line was elsewhere... i have all the other lines covered co it cant go back to the motor... the engine runs without anything on there but i cant imagine it doing any good to the fuel mixtures n all

anyone know what its for... just plug it up??? oh its a rb25det neo if that matters

thanks

[Abo Bob]

It's supposed to go to a boost sensor beside the brake booster. It plugs up underneath it. Cheakc there is one going to there.

Also, yes you should never leave these things with nothing on them.