H23 I.M. black box question.

[I-Deal214]

I have a H23 I.M with a H23 Black box on a 91 accord ex with f22a head. The question is that the "Black box" i got with the H23 IM has the same exact plug as the one behind the passender side headlight between the battery and the fender. would I be able to just swap them out and connect the hose to the IAB from there to make the Butterflies work correctly?
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The one on the car.

the one i got with the H23 IM the plug goes right in.

[jewelproject]

im assuming u have a f22a6? or a4? if so you dont need to swap. just run that #8 vac line to the plenum. thats if you have a h23 plenum.
this how i did mine
http://www.cb7tuner.com/vbb/showthre...=h23+vac+lines

[PR CB7]

its not exactly the same box, but it does the same function, and yes you can use it, the box thats next to the air filter is also a vacuum box that the solenoid next to it controls

the funny part is people go and spend up to $50 for the iab box
when they already have one in their cars that they aint using

[I-Deal214]

im assuming u have a f22a6? or a4? if so you dont need to swap. just run that #8 vac line to the plenum. thats if you have a h23 plenum.
this how i did mine
http://www.cb7tuner.com/vbb/showthre...=h23+vac+lines

I have a f20A with F22a head.and h23 IM with double spacer

its not exactly the same box, but it does the same function, and yes you can use it, the box thats next to the air filter is also a vacuum box that the solenoid next to it controls

the funny part is people go and spend up to $50 for the iab box
when they already have one in their cars that they aint using

Sweet thanks for the info. Guess ill have an extra black box then.

[I-Deal214]

I got that extra black box and extra h23 plenum and the extra iab spacer when I bought a throttle body from some guy on CL. 40$ guess i lucked out then. thanks again guys for the info.

[Tippey764]

That opens and closes a little flapper in the stock intake. If you don't have a stock intake then delete it.

[I-Deal214]

That opens and closes a little flapper in the stock intake. If you don't have a stock intake then delete it.

You mean the one that comes with the h23 ? I have a spacer and the plate with the flappers. will it work for that one?

[owequitit]

its not exactly the same box, but it does the same function, and yes you can use it, the box thats next to the air filter is also a vacuum box that the solenoid next to it controls

the funny part is people go and spend up to $50 for the iab box
when they already have one in their cars that they aint using

The two do not open at the same RPM. And, running a vacuum hose that long to the front box doesn't work very well. I tried it once.

[I-Deal214]

The two do not open at the same RPM. And, running a vacuum hose that long to the front box doesn't work very well. I tried it once.

So swap out the box and relocate it closer to the I.M ?

What I've done is use one of the plastic vacuum lines and melted the ends to make the air hole about 1/4 the original size to restrict the air flow and connected it to the plenum and this way it only releases the vacuum for the butterflies at a way higher RPM than just a straight vacuum line that makes them open when any pressure is released.

[Tippey764]

You mean the one that comes with the h23 ? I have a spacer and the plate with the flappers. will it work for that one?

in the intake... not the intake manifold

Its part of the stock ducting system and is called the intake control solenoid valve.

Description : The intake control system decreases air intake noise.

When the engine speed is below 3,500 rpm, the ecu supplies current to the intake control solenoid valve. This opens the solenoid valve sending intake manifold vacuum to the intake control diaphragm.



Pretty much its a valve in the intake system that lets less air into the engine at alow RPM by holding a flap closed. When you rev it up it opens up and you get that extra bit of air that was before blocked off.

[ferenza]

^^

great info. i never knew what that box was for and went ripping it out as soon as i got a cone filter.