can I get IM off a 91 EX to do MPFI swap?

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Old Aug 30, 2002 | 10:37 AM
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Default can I get IM off a 91 EX to do MPFI swap?

Basically I came across a 91 civic EX at the junkyard. could not read the read the engine block code, but the motor looked exactly like a CRX Si one. Can I use this to do MPFI on my D15B2?
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Old Aug 30, 2002 | 12:17 PM
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Default Re: can I get IM off a 91 EX to do MPFI swap? (b16awarrior)

yes
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Old Aug 30, 2002 | 02:17 PM
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Default Re: can I get IM off a 91 EX to do MPFI swap? (b16awarrior)

Basically I came across a 91 civic EX at the junkyard. could not read the read the engine block code, but the motor looked exactly like a CRX Si one. Can I use this to do MPFI on my D15B2?
It is the same motor and as said before yes itll work.
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Old Aug 30, 2002 | 04:32 PM
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Default Re: can I get IM off a 91 EX to do MPFI swap? (Losrocket'91)

how much modification is involved in the MPFI swap?I've been looking to do it
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Old Aug 30, 2002 | 05:02 PM
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Default Re: can I get IM off a 91 EX to do MPFI swap? (amon)


how much modification is involved in the MPFI swap?I've been looking to do it
My friend has done it before and from what hes told me and when i look at it its actually fairly simple. He explained the wiring to me which isnt too bad and he said for him the hardest part was removing and reinstalling the intake manifold bolts. Not much room to work with. All you really need is the Si ecu, intake manifold w/ sensors,TB,resistor box and i think thats it. Am i forgetting something? seems like it oh well.

Ive also heard that its good to use the Si cam if you have access to it when you get the other parts needed. Im not really sure why but thats what ive been told.
Can anyone elaborate on this?
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Old Aug 31, 2002 | 01:58 PM
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Default Re: can I get IM off a 91 EX to do MPFI swap? (b16awarrior)

Sounds good. Thanks guys
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Old Aug 31, 2002 | 06:05 PM
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Default Re: can I get IM off a 91 EX to do MPFI swap? (Losrocket'91)

All you really need is the Si ecu, intake manifold w/ sensors,TB,resistor box and i think thats it. Am i forgetting something?
complete fuel system(injectors, rail, regulator, etc) as well as an SI distributor
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Old Sep 1, 2002 | 04:51 PM
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Default Re: can I get IM off a 91 EX to do MPFI swap? (WiteBoi)

thanx alot,i would think the trottle cable would need to be changed,is that something to worry about?how complex is the wiring?
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Old Sep 1, 2002 | 04:53 PM
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Default Re: can I get IM off a 91 EX to do MPFI swap? (amon)

u can keep the trotle cable if u clever rerouting it. i still got my old one......
and the wiring tis not complex. tis fairly simple if u understand what u need to do it...
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Old Sep 1, 2002 | 05:59 PM
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Default Re: can I get IM off a 91 EX to do MPFI swap? (WiteBoi)

All you really need is the Si ecu, intake manifold w/ sensors,TB,resistor box and i think thats it. Am i forgetting something?

complete fuel system(injectors, rail, regulator, etc) as well as an SI distributor
Thanks! I knew i was forgetting something. I assumed when you pull the manifold that would include the fuel system so thats why i didnt individually mention each of those.
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Old Sep 2, 2002 | 11:14 AM
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Default Re: can I get IM off a 91 EX to do MPFI swap? (JDM EF9)

sorry to highjack the thread,thanks for your help
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Old Sep 4, 2002 | 02:15 PM
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Default Re: can I get IM off a 91 EX to do MPFI swap? (amon)

So I can use the Cam off this motor? I plan on doing the swap soon, but believe it or not it is easier for me to put in the Si cam first. Would I notice a difference?


[Modified by b16awarrior, 5:02 AM 9/5/2002]
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Old Sep 5, 2002 | 10:20 AM
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Default Re: can I get IM off a 91 EX to do MPFI swap? (b16awarrior)

I was curious because I want to make sure that the cam is the same as a CRX Si's cam and that it will work in my CRX Dx. Question: will I be off a tooth like what I have been hearing floating around the forum?
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