Mpfi swap

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Old Aug 18, 2011 | 11:55 PM
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Default Mpfi swap

I only have 9 hours before i have to use this car, its my daily driver. I have no clue what the two prongs for hoses are on the bottom of the throttle body and also where the two hoses on the iacv go to. also dont know what bracket to use to hold intake to block



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Old Aug 19, 2011 | 12:17 AM
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Default Re: Mpfi swap

the throttle body inlet outlet is for coolant. you can generally leave those unused. the IACV uses the coolant from the intake manifold.
you really should have done some research prior undertaking this
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Old Aug 19, 2011 | 12:35 AM
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Default Re: Mpfi swap

this should sorta help

http://htarchive.org/showthread.php?p=37672068
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Old Aug 19, 2011 | 12:35 AM
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Default Re: Mpfi swap

You really don't need that IM to block bracket.
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Old Aug 19, 2011 | 12:43 AM
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Default Re: Mpfi swap

Originally Posted by .Beaver
You really don't need that IM to block bracket.
what he said
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Old Aug 19, 2011 | 12:08 PM
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Default Re: Mpfi swap

now i have a new problem. turns out the dizzy didnt work so i had to put the dpfi intake back on so I could drive the car today. now when i depinned the two red and two yellow wires from the ecu i didnt label them what order they go in since i planned on going mpfi. now my car shakes bad and idles high until im going 10mph+
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Old Aug 19, 2011 | 12:12 PM
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Default Re: Mpfi swap

is this an EF?
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Old Aug 19, 2011 | 12:19 PM
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Default Re: Mpfi swap

Originally Posted by Ash J. Williams
is this an EF?
They prefer the term "God's Chariot"
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Old Aug 19, 2011 | 12:24 PM
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Default Re: Mpfi swap

Those prongs are for the NOS.
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Old Aug 19, 2011 | 12:28 PM
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Default Re: Mpfi swap

Originally Posted by Ash J. Williams
is this an EF?
yea 91 sedan
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Old Aug 19, 2011 | 12:46 PM
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Default Re: Mpfi swap

The manifold bracket is useless, just leave it off. The two hoses coming off the throttle body..... one of them goes to the IACV, the other goes to the intake manifold. On the IACV side, you've got the one hose coming from the throttle body and the other hose goes to the water pipe that runs from the pump to the thermo housing.

Hope that helps.
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Old Aug 19, 2011 | 12:54 PM
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Default Re: Mpfi swap

i'll move this to the appropriate forum then. they will be help you out faster
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Old Aug 19, 2011 | 01:16 PM
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Default Re: Mpfi swap

Originally Posted by gnxpro24
now i have a new problem. turns out the dizzy didnt work so i had to put the dpfi intake back on so I could drive the car today. now when i depinned the two red and two yellow wires from the ecu i didnt label them what order they go in since i planned on going mpfi. now my car shakes bad and idles high until im going 10mph+
LoL - swap them around until it's correct you literally have a 50/50 chance of getting it right. If you did the multi-port conversion right you wouldn't have touched all of the wires to begin with...
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Old Aug 19, 2011 | 03:06 PM
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Default Re: Mpfi swap

Originally Posted by N3va3vaSatisfi3d
LoL - swap them around until it's correct you literally have a 50/50 chance of getting it right. If you did the multi-port conversion right you wouldn't have touched all of the wires to begin with...

when theres 4 wires you dont have a 50/50 chance. also I had it wired on my other civic and I recently replaced the entire subharness so to save time on my daily driver I just depinned what was wired on my old civic and switched i to my daily.
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Old Aug 19, 2011 | 05:50 PM
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Default Re: Mpfi swap

Actually being that the 2 yellow wires only have 2 pinouts they are SUPPOSED to go in and the 2 red wires have only 2 pinouts they are SUPPOSED to go in - mathematically it is a 50% chance... You need to research more like others have stated; it's clear you lack basic knowledge. Stay in school.
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Old Aug 19, 2011 | 06:12 PM
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Default Re: Mpfi swap

Originally Posted by N3va3vaSatisfi3d
Actually being that the 2 yellow wires only have 2 pinouts they are SUPPOSED to go in and the 2 red wires have only 2 pinouts they are SUPPOSED to go in - mathematically it is a 50% chance... You need to research more like others have stated; it's clear you lack basic knowledge. Stay in school.
I understand that, but when you dont know which two pins the red or yellow go into then it makes it more than a 50% chance. so lets not talk about knowledge. I just started working on cars last year am I supposed to be a pro mechanic by now or what?
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Old Aug 19, 2011 | 06:21 PM
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Default Re: Mpfi swap

Well you did put "pro" in your name...

The yellow wires go to A1 and A3.
The red wires go to A5 and A7.
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Old Aug 19, 2011 | 06:30 PM
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Default Re: Mpfi swap

then the wires are in the right place
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