Doing a mpfi conversion on my 90 civic lx

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Old Jan 29, 2012 | 07:03 PM
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818blue818's Avatar
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Default Doing a mpfi conversion on my 90 civic lx

i know theres many different diagrams for the conversion but i was hoping some one could help me out. in a simple broken down way i could understand, this is my first time and feel comfortable enough to do it but want all the info before i do it.what year si im gasket do i get? and im planning on using the dpfi throttle cable. i just need to know the wires i need to pin out cut switch and all that. i have a d15b non vtec
thanks

Last edited by 818blue818; Jan 29, 2012 at 07:23 PM.
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Old Jan 29, 2012 | 07:09 PM
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Default Re: Doing a mpfi conversion on my 90 civic lx

by what your saying, your going to run into problems. why do you want to reuse a less than $10 gasket? dont half *** it, buy a new gasket and all other needed hoses. also replace the factory hose clamps with new ones. also coolant.
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Old Jan 29, 2012 | 07:11 PM
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Default Re: Doing a mpfi conversion on my 90 civic lx

i had the timing and new coolant put in like 3 4 months ago but yea im ordering parts from majestic.
but as far as the electrical cuz i might hit up the junk yard in the next few days so i would like to know what i need to cut and all that.
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Old Jan 29, 2012 | 07:28 PM
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Default Re: Doing a mpfi conversion on my 90 civic lx

if you google it all the info is there. this question get asked about once a day.

you need:
complete manifold with all sensors, fuel rail, injectors etc..
injector clips that match the new injectors
resistor box (depends on which injectors you use, some dont use them)
ecu pins if you dont want to do a cut n solder job.
i recommend a new 4 wire plug at the shock tower (passenger side) to allow for easy removal of the harness if need be later down the road.
you will also need a new ecu (PM6 if staying obd0)
as well as a matching distributor (TD02U or TD18U if staying obd0)

if you need/want to purchase new ecu pins/terminals lmk i have a stock pile of new ones. this will make for a cleaner harness.
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Old Jan 29, 2012 | 07:35 PM
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Default Re: Doing a mpfi conversion on my 90 civic lx

i have the following:
Intake manifold
Dizzy
90 pm6
Resistor Box

i just wanted to know what do i need from the junk yard and whats up with the wiring.
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Old Jan 29, 2012 | 07:44 PM
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Default Re: Doing a mpfi conversion on my 90 civic lx

yes you need the big round dizzy plug. has 7 wires, one hole on the plug has a black cap in it.
the 2 wire plug does not need to be changed
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Old Jan 29, 2012 | 07:45 PM
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Default Re: Doing a mpfi conversion on my 90 civic lx

Originally Posted by codybuRr
yes you need the big round dizzy plug. has 7 wires, one hole on the plug has a black cap in it.
the 2 wire plug does not need to be changed
so your saying only 1 dizzy plug right?
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Old Jan 29, 2012 | 07:50 PM
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Default Re: Doing a mpfi conversion on my 90 civic lx

no. an obd0 plug
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