i was wondering about the iab plate on my boost setup. i have heard gut it. looks easy to do but my ? is. is it absolutly necesary? can the whole plate just be removed? i was wondering cause i started disasembling it tonite and it looks so easy to just remove it. lmk what u think.
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Last edited by coupe; 03-25-2009, 10:44 PM. -
Gutting it creates a spacer... longer runners are usually best for low end power. If you want to remove it, you're better off getting an F22A1 intake manifold instead.
Why do you want to remove the IAB plate? Why not just keep it intact and functional?
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I'm thinking taking the IAB plate completely out, would cause a tad of restriction, since adding an additional spacer (double stack), creates more power.
I'd just keep it the way it is like Deev stated, or just gut it and keep it in.
98' Mustang 3V Swap
11' VW CC R36Comment
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what are the pros and cons to an iab and how would you get around it
"accidents in the back seats cause kids"
but who says that i
have back seats in my sedan
THE ALASKA EXPERIMENTComment
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Restriction? You'd be removing a restriction by taking it out.Originally posted by Gotz Cb7 View PostI'm thinking taking the IAB plate completely out, would cause a tad of restriction, since adding an additional spacer (double stack), creates more power. I'd just keep it the way it is like Deev stated, or just gut it and keep it in.
Get around it? What do you mean? Do you know what the IAB system is?Originally posted by AK-49-CB7 View Post
It's a secondary set of intake runners, blocked off by "butterflies" (throttle-body-like valves/plates) At a certain RPM, they open, providing more airflow capacity for the intake manifold. To remove the plate, or gut it, you're essentially leaving the secondary runners open all the time, which will cause a loss in low end power, but open up a bit of power in the top end.
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intake air-bypass yes i was just wondering because i dont have them i dont think f22a4 but i am just trying to get up to date on my terminalogyOriginally posted by deevergote. View Post
"accidents in the back seats cause kids"
but who says that i
have back seats in my sedan
THE ALASKA EXPERIMENTComment
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Correct. The F22A4 does not have that system. You can add it by using the manifold from an F22A6, or better yet, an H23A1. You'll need the PT6 ECU and the "black box" that controls it.
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ya so if i do my hybrid intake h23 plenum and a4 runners will i need the box
"accidents in the back seats cause kids"
but who says that i
have back seats in my sedan
THE ALASKA EXPERIMENTComment
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You cannot put the H23 plenum on the A4 runners. Only the A6 runners. And yes, the box operates the IAB system. You will need that box if you add the system, regardless of how you do it.
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I recently completed my IM, A6 runners w/ H series plenum, maxbore t/b, bisimoto IM gasket, some port work, other extras. Sat the plenum right on the runners, no IAB plate. Did lose some low end but did gain some in the mid-high end. Anxious to see what the motor does once it's got it's camshaft, header and 2.5" mandrel exhaust plus w/ tuning.
For your project, I myself would delete the IAB plate entirely.Comment
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ya i plan on duing the h23/a6 in take what all needs to be done to put them together and work on the head
"accidents in the back seats cause kids"
but who says that i
have back seats in my sedan
THE ALASKA EXPERIMENTComment
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So if I took my IAB plate out of my intake manifold, I'd gain or lose? The longer the runners are, the more power you'd gain, correct? Longer runners, would be adding an additional plate.Originally posted by deevergote. View Post
If you take the plate out, to where the plenum's sitting right on the manifold, wouldn't that restrict? I should try this out.98' Mustang 3V Swap
11' VW CC R36Comment
278 whp 266 wtq. 
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