secondary butterfly question

[envy]

i have a jdm h22 with a p13 in my 92 accord, and my secondary butterflies are not opening.. I found out that my mechanic didnt connect the block box thats on top of the fuel rail he by past it, Could that be the reason why its not opening?

[AccordReborn]

The solenoid on top of the h22a is a Japanese emissions thing. What controls the iab's is a solenoid and a black box underneath the intake manifold toward the left side of the car. check if those are there.

[H22Artman]

make sure the wire for IAB's were added. i bought my car with an Hswap and the IAB was never added.
still on my to do list....

the solenoid i think ^^^^ is referring to can be deleted alltogether.

[visualpoet]

If they aren't moving, they're probably open, not closed. If they haven't been connected to the control box or a vacuum source, then they most likely aren't closing. They are naturally in the open position.

[envy]

does the block box usually go bad ?

[envy]

Can someone tell me how they hooked up there iab because i still cant get mines to work? my mechanic said that its reading that they are opening but the secondaries are not opening.. any help will be a plus

[Rome702]

Can someone tell me how they hooked up there iab because i still cant get mines to work? my mechanic said that its reading that they are opening but the secondaries are not opening.. any help will be a plus

Open up you intake manifold and undo the screws to the butterflies and remove them. The Aibs are used to restrict air at higher rpms... This part is unnessicary and will hurt your top end performance if left on.

[wed3k]

iabs are opened above 4800 rpms, how does that restrict air?

[sombra13]

ok i had this problem like a week ago and posted it here . the iabs open around 4ooo to 5ooo rpm and if u delete them u lose low end torque trust me wen i finished hooking them up my car didnt feel sooo sluggish on take off and im talking about juss daily driving.


as to hooking them up its easy juss to avoid further confusion : first locate black box under ur intake manifold if its there it will have a plug on it and it has a pink and a black/yellow wire on it. pink goes to pin a17 on ur ecu and the other black/yellow goes to 12v source

second if the vaccum hoses werent connected it will have both one will go to intake mani other to diaphram .the one coming from the black box with the lil white valve on hose goes the intake mani the other coming from the lil sensor goes to the diaphram ..

srry if u get confused if anything juss pm me
and trust me it was a headache figuring it out but once i did it was a breeze .
on top of that u feel the difference once they work

and i have a jdm h22 with a p13

[visualpoet]

Open up you intake manifold and undo the screws to the butterflies and remove them. The Aibs are used to restrict air at higher rpms... This part is unnessicary and will hurt your top end performance if left on.

AGAIN, PLEASE stop giving out this incorrect information.

I've seen you post it at least twice. The IABS are closed at low RPMs in order to improve low end torque, they open up at higher RPMS to improve air flow and high end power. Removing them will do nothing to improve the top end.

I don't know who taught you this incorrect information, but please stop telling other new members.

[Rome702]

AGAIN, PLEASE stop giving out this incorrect information.

I've seen you post it at least twice. The IABS are closed at low RPMs in order to improve low end torque, they open up at higher RPMS to improve air flow and high end power. Removing them will do nothing to improve the top end.

I don't know who taught you this incorrect information, but please stop telling other new members.

actually, they close at higher rpms, to help reduce the turbulence in the manifold at higher rpms That is why blacktrax does an aib elimination to there im and no other aftermarket company (SKUNK2, BLOX, BLACKTRAX, ect....) produces an aftermarket manifold with aib's (Cause they are a restrictor). Removing the aib butterflies has shown an increase in hp, but is not recommended for stock applications. This works great on mine, due to a chipped p13, crower stage3 camshafts, ported and polished manifold and 750cc injectors on a N/A h23 Frankenstien. Also if you eliminate the aib plate, you will lose power and torque, due to lack of air volume in the manifold. Eliminating these does increase high end hp (DYNO PROVEN).

BTW.... Do a little research about peoples post before leaving remarks about them, cause this supposedly incorrect info has come from dynos, as well as machine shops, and producers of aftermarket intake manifolds.

[904drACCORDMANG]

actually, they close at higher rpms, to help reduce the turbulence in the manifold at higher rpms That is why blacktrax does an aib elimination to there im and no other aftermarket company (SKUNK2, BLOX, BLACKTRAX, ect....) produces an aftermarket manifold with aib's (Cause they are a restrictor). Removing the aib butterflies has shown an increase in hp, but is not recommended for stock applications. This works great on mine, due to a chipped p13, crower stage3 camshafts, ported and polished manifold and 750cc injectors on a N/A h23 Frankenstien. Also if you eliminate the aib plate, you will lose power and torque, due to lack of air volume in the manifold. Eliminating these does increase high end hp (DYNO PROVEN).

BTW.... Do a little research about peoples post before leaving remarks about them, cause this supposedly incorrect info has come from dynos, as well as machine shops, and producers of aftermarket intake manifolds.

They absolutly do not close at 4k rpm, they are always open if no vacuum is applied, as soon as your car starts vacuum IS applied. If you dont believe me look at the arm on the iab plate with the engine off, note its position, now start the car and see if the arm hasnt turned 180, actually closing the butterflies, now rev up your car and watch it open around 4k rpm.

[wed3k]

lol, with crower 3's you're not going to have much power at 2k anyways.

[bcjammerx]

actually, they close at higher rpms, to help reduce the turbulence in the manifold at higher rpms That is why blacktrax does an aib elimination to there im and no other aftermarket company (SKUNK2, BLOX, BLACKTRAX, ect....) produces an aftermarket manifold with aib's (Cause they are a restrictor). Removing the aib butterflies has shown an increase in hp, but is not recommended for stock applications. This works great on mine, due to a chipped p13, crower stage3 camshafts, ported and polished manifold and 750cc injectors on a N/A h23 Frankenstien. Also if you eliminate the aib plate, you will lose power and torque, due to lack of air volume in the manifold. Eliminating these does increase high end hp (DYNO PROVEN).

BTW.... Do a little research about peoples post before leaving remarks about them, cause this supposedly incorrect info has come from dynos, as well as machine shops, and producers of aftermarket intake manifolds.

actually...you are wrong...visualpoet, wed3k, are right...they open up at higher rpms...not only is this found in the manual...it has been confirmed a couple times by members here.

So WHERE does the hp generally increase on the dyno when you remove the IAB's? Bet you do not know.

There is a hp increase AND a decrease...bet you did not know that either.

[wed3k]

probably above 4g's like when they open with a regular iab setup. but who daily's at 4g's? in my accord, i try to keep rpm's under 3k.