Just did my intake, I have a question about what this is....

[lbrowne]

Installed my cone intake with the MAF adapter n all. Looks nice and I can't wait to open her up on the road once i get the timing chain kit done.

but I have a question, what is this that went to the stock airbox? i just put a shop cloth over it for now till i find out what I should do.

thanks,

lbrowne

[GodDrivesA240sx]

That's a hose for you AIV I believe. There's like a million threads on what people have done with it. I think most just throw a breather on there.

[TrunkMonkey]

i took mine completely out (black box and all). just make sure you plug the hole in your exhaust.

-demetrius

[MaineExport]

What exactly is a "timing chain" kit?

And yes... throw a small breather filter on there....

[lbrowne]

what is its purpose, and what are the risks if i remove it altogether? I think I might just put a little breather on it.

EDIT: will removing the whole black box apparatus throw a service engine soon light or anything like that?

[C-Kwik]

Without the AIV you're motor will have a ton of Excess HC emissions. Don't leave it plugged too long. It will allow exhaust gases to corrode the vacuum actuated valve. Put a breather element on it or remove the entire system altogether.

[s0ldats]

what is its purpose, and what are the risks if i remove it altogether? I think I might just put a little breather on it.

EDIT: will removing the whole black box apparatus throw a service engine soon light or anything like that?

i'd like to know if i can eliminate this as well

[lbrowne]

Without the AIV you're motor will have a ton of Excess HC emissions. Don't leave it plugged too long. It will allow exhaust gases to corrode the vacuum actuated valve. Put a breather element on it or remove the entire system altogether.

Yes I'll put a breather on it unless I can remove it without getting any error codes or Check engine lights. Thats what I was asking in my second question.

Thanks,

lbrowne

[s0ldats]

Without the AIV you're motor will have a ton of Excess HC emissions. Don't leave it plugged too long. It will allow exhaust gases to corrode the vacuum actuated valve. Put a breather element on it or remove the entire system altogether.

so will it give any error codes or check engine lights if i remove the whole systeM?

[Luke]

i'd like to know also

[HaveBlue]

i just did a hotshot header on my 1990 and removed the aiv. i blocked off all the hoses. the ecu throws a code but i have not checked it yet. it came on for a while then went off and now its back. not sure if its directly related to the aiv or just a problem with the o2 sensor. i will let you know when i check the code.

[mattlord42]

I removed the whole assembly on my car and didn't get any new error codes. Since nobody really clarified for you the AIV valve is designed to dump air from your intake into your cat to make it heat up quicker after starting. Most people recommend using two nickles to plug the hole in the exhaust. Mine is ghetto rigged right now with JB weld and a bolt.

Matt

[HaveBlue]

well after looking for a block off at every automotive and hardware store in town and not being able to find a metric one i stumbled upon a parts store that had my solution. the plug in my header was 18mm and the auto parts guy thought for a while and handed me an 18mm spark plug

[96_S14_SE]

Hook an ignition wire up to that bad boy of a aiv plug... Itll get your cat really hot really quick

[trpower7]

The consensus on the AIV removal thing is as follows:

It's purpose is to dump fresh air into the catalytic converter to allow it to heat up quickly on startup and begin it's emissions duties quicker. Removing the AIV should NOT throw a code, and shouldn't affect your emissions as long as you go drive the car for awhile before you have them tested. Logic seems to say that at that point it would be heated up plenty well and function just as it is supposed to. AIV can be plugged several ways, cut the pipe right after the fitting and use two nickels, cut teh pipe after the fitting clamp then weld it shut, or use something like an 18MM spark plug. Mine was removed and I welded it shut, no codes, car passed emissions with flying colors, doesn't leak, and got me some extra bay space.

[240_Keyy]

2 nickels work like mofo's

[C-Kwik]

The consensus on the AIV removal thing is as follows:

It's purpose is to dump fresh air into the catalytic converter to allow it to heat up quickly on startup and begin it's emissions duties quicker. Removing the AIV should NOT throw a code, and shouldn't affect your emissions as long as you go drive the car for awhile before you have them tested. Logic seems to say that at that point it would be heated up plenty well and function just as it is supposed to. AIV can be plugged several ways, cut the pipe right after the fitting and use two nickels, cut teh pipe after the fitting clamp then weld it shut, or use something like an 18MM spark plug. Mine was removed and I welded it shut, no codes, car passed emissions with flying colors, doesn't leak, and got me some extra bay space.

Well experience with 2 S13's that wouldn't pass due to high HC emissions tells me otherwise. In both cases, I replaced the faulty valve and the car passed with flying colors.

[4cefed]

Wow, sucks to have emmisions laws huh? Here they just look to see if you have a cat on the exhaust. (Or at least something that looks like a cat. ) I just threw a cone on my mafs after welding up my own adapter. I love the grunt from the intake. I just have to find somehting to block off that area of the bay to keep the hot air out.

[93RPS13]

where can you find a little breather for it??

[lbrowne]

I went to Canadian Tire and bought something that was called an actual breather. Its a little box shaped apparatus with a wirey filter in it. It was in the auto section, I just brought in the hose that sticks off from the AIV box and the sucker fits right on there.

[rudeboy]

i have an injen and it came with a hose and port to link my intake to the AIV box....

[Onevia S13]

ok, so I did the same thing when adding my Intake adapter and filter on Friday. I removed the tube from my manifold, blocked it, and capped the sensor that was just underneath the AIV Box. Up side, the engine bay is 100x cleaner with that out of there. Down side, my idle is screwed, and my car lags and bogs unless I am at WOT. Any ideas why its doing this. Is it because I capped that sensor, and didnt leave it wide open, or is it because I didnt remove any of my other emissions lines. It also acts as if my secondaries are not opening, but I am not 100% sure if that is true. Once the car revs past 3500-4000rpm it just doesnt pull like it used to, so my theory is that they are not open. Any ideas ?

[Onevia S13]

Anyone at all ???

[HaveBlue]

not sure what that thing is but I think it allows the gasses from the charcoal canister into either the intake or the exhaust.

update on my setup. i checked my ecu code and it turned out to be the o2 sensor. i had spliced in extra wire to run it to the 'new' location. after i removed the wire put everthing back, reset the ecu and drove around for a while the code went away.

[allthrottlenobottle]

that "black box" provides fresh filtered air (via stock air box) to AIV case and sensor. It's part of your emissions and fuel system. I thru a R1 racing mini filter (about 9 bucks cdn) on it. You must filter this inlet or your idle will be crap.Or remove it all together.

[Dragon240]

Ok.. I'm replacing my radiator and there is a hose running off the bottom side of my intake just up from the TB and it runs down to a box something like the stock resonator box on the underside of the stock air box. What's the point of this? Can I take it out and plug up the whole?

[Dragon240]

or plug up the hole..

[implict]

I Took mine out.. No problems at all.

[Dragon240]

What'd you use to plug the whole?

[GroundZero]

i took bothe the resonators out on mine, the one right before the throttle body i used a rubber plug from my dads 71 vette, threw a little clear silicon rtv on it all done. the only thing these resonators do is deaden that cool sounding air induction noise.