PDA

View Full Version : Weird intake thing

Driftin_240sx
06-05-2003, 12:55 PM
im sure this has been discussed but i have no idea what it would be called... its on both sohc and dohc ... there is a tube that goes from the intake to this black box, then into some kind of ....somethin. then to the exhaust. im sure this is some kind of emissions , but what is it and what does it do.?

david
91CRXsiR
06-05-2003, 01:05 PM
are you talking about the breather box?
Driftin_240sx
06-05-2003, 01:14 PM
here is it.

http://www.imagestation.com/picture/sraid64/p15361d5da56b35d515290b85b8fdc2a1/fbfe9150.jpg
http://www.imagestation.com/picture/sraid64/p0c000e35f3670afb7966c61780c2ed4a/fbfe914d.jpg

david
240Driver39
06-05-2003, 08:44 PM
aiv system
Phlip
06-06-2003, 07:36 AM
Are those S13s? My car doesn't have that
S13Nissan240SX
06-06-2003, 10:14 AM
I have an S13 KA24e and mine has that box as well. Once the hose that goes from the airbox to that box broke and the car wouldn't pass emmissions. I hooked it up again and it passed the next time. I know that those things could be completely unrelated, but I believe it is. I'm curious to find the truth though.

Thanks for bringing it up,
Matt
240Driver39
06-06-2003, 01:45 PM
yes, they are s13's, s14's didnt have the aiv
direb0y
06-07-2003, 08:26 PM
Originally posted by S13Nissan240SX
I have an S13 KA24e and mine has that box as well. Once the hose that goes from the airbox to that box broke and the car wouldn't pass emmissions. I hooked it up again and it passed the next time. I know that those things could be completely unrelated, but I believe it is. I'm curious to find the truth though.

Thanks for bringing it up,
Matt

same here, my gas mileage has gone all to hell, car feels a little sluggish too, but i also need a tuneup sooooo that might be the culprit..
S13Nissan240SX
06-09-2003, 05:54 PM
What does aiv stand for?
Jsquared
06-09-2003, 06:32 PM
Air Intake Valve. pulls fresh intake air into the exhaust stream to dilute exhaust, if i'm not mistaken...
AKADriver
06-09-2003, 06:40 PM
Not to dilute it so much as to add oxygen to light off and maintain the reaction inside the catalyst when the engine is cold and idling.

S14s don't use an AIV because they simply run extra lean at idle to do the same thing.
240meowth
06-10-2003, 12:32 AM
if i recall it actually mixes fresh air with some exhaust air and let it run happy w/ the emission people