The importance of an IAB controller!!!!!!!!!

[NAiL05]

I'm still new to the H23 on the F22 and all so I'm still learning. What I'm understanding is that for the secondary butterflies to open at a proper time, it's got to be hooked up to the IAB which needs to be wired into a chipped ECU?

...There are factors. Do you have a chipped ECU in the first place. Second of all if you dont you need an ECU that will open IAB. The IAB has a black box as it is referred to underneath the IM with vac lines hooked to it. It opens at a certain rpm so you still retain low end and opens past 5300 or so for h22. I dunno what it was for the F probably 4500 ish.

[prNonVtec4u]

when i had 'em hook up on w/ my pt6, they'd open at 3500ish

[d112crzy]

...There are factors. Do you have a chipped ECU in the first place. Second of all if you dont you need an ECU that will open IAB. The IAB has a black box as it is referred to underneath the IM with vac lines hooked to it. It opens at a certain rpm so you still retain low end and opens past 5300 or so for h22. I dunno what it was for the F probably 4500 ish.

the black box is a solenoid, activated by the ecu.

You do need an ecu that will activate the IAB when you have a black box.

[UrDoneSRH]

i love my h23 intake manifold... it has caused a lot of headaches and time, but those were my mistakes... the power difference is way noticeable.

[Otto]

Nice videos, never thought to just run a spare IAB right in the cab.

Unless I can get an A6 ECU (that's the pt6, right? been awhile) for less than, say, $50...I'll just leave it with direct vacuum control. That is...if I ever get around to installing the H23 IM

[UrDoneSRH]

just do it already, its easy, i waited for almost 1/2 a year, after i was done i was pissed for waiting for so long.

[PR CB7]

damn honda fan revs at 7800k
on a single cammmmmmmmm jajajajaja

either way
i have a wide band

and also the pt6 after 4k it sends more fuel into the engine

u can see d mix, float at 1/2 throttle and after it passes 4k it goes to rich
al the way

[C91BLX7]

damn honda fan revs at 7800k
on a single cammmmmmmmm jajajajaja

either way
i have a wide band

and also the pt6 after 4k it sends more fuel into the engine

u can see d mix, float at 1/2 throttle and after it passes 4k it goes to rich
al the way

that made no sense

[PR CB7]

well
iabs open from 3-4k rpms
right?

with the wideband i noticed that after 4k the computer send more fuel into the system, thats why u feel alotta difference after 4k

by leaving the without the box the the jus open

whenever u WOT

did u uunderstand now?

[NAiL05]

No...and you most likely got one of those dummy LED gauges instead of a real AF gauge.

[PR CB7]

ok ma bad buddy
i dont have to prove anything to u

its a real AEM wide band
trustme
i wont pay 200$
for a dummy light that goes up and down

also dummylights plug into ur o2

i had to make another hole for the o2 sensor wideband
and it does richen the mixture
after 4k

[19dabeast85]

The PT6 definitely has a slightly different fuel curve than the PT3 to compliment the different cam and IM in the EX accord. So yes, whenever it grounds pin 17 to open the IAB's it begins sending more fuel than the PT3 normally would at that same rpm....more air needs more fuel to have a proper mixture.

[bcjammerx]

When I got my intake manifold I got the vacuum switching valve from the firewall...and the black box was under the plenum. Hell I got the egr valve too...I just ganked the whole assembly and anything connected to it...well besides the engine of course...just to make sure I had everything I'de need.

I thought that the firewall vsv operated the valves though, coulda sworn it goes to them.

Oh well I also have the ecu so I will be hooking that up...thurs perhaps??

I was thinking about just hooking it up with vacuum line...but I've played with the vacuum/pressure via in cab vacuum line and it doesn't take much throttle play to drop the vacuum...

You guys are absolutely right, those valves REALLY need that controller to work right. Can't wait to get mine on...got the intake gaskets today...whoo hooo.

[accord junkie]

well i'm gonna do this swap soon just waiting on new gasket set. i bought my pt6 ecu off another member. after reading all of this i wonder while i still have my junker if i should try and take the whole wire set up from aib control, 2 the ecu and wire it in. wonder how hard that would b and after that they should work wright.

[Kurobei]

For all of you who have your secondaries controlled directly with a vacuum line: I took a long piece of tube and watched my secondaries as I was driving, and direct vacuum controlled is definitely robbing you of power unless you're WOT all the time......check these out.

Video 1

video 2 - shows valves a little better

I had the valves opening all the way on moderate acceleration in 2nd and 3rd as low as 2000rpm-redline. My deduction is that hooking the controller directly to the manifold will make your bottom end suffer because you don't have good flow velocity to mix the fuel up well.

This has to be the most impressive and best visual video i've seen on CB7tuner this year in regards to performance tech. Good research man! Seeing is believing rather than Honda-tech style word of mouth.