s14 cold pipe help
 

on the s14 cold pipe there is a large tube coming off the main charge pipe. too big to be vacume. ive done a lot of searching and no one seems to make mention of it. what does it connect to?

thanks in advance

Largest tube should be your recirculation valve...smaller one goes to your IACV

thanks for the response. i think it would have to be something else tho. cant recirc from a charge pipe to a charge pipe. anyone else know?

nope
iacv 100%

Pretty sure its your iacv...