Will an '88 CRX Si Engine fit in my '88 DX?

[Elevorett]

Exactly what the name says. I have a friend who is giving me an 88' CRX Si Engine, and I was wondering if it will just fit into my DX with no problem. Would I need a new ECU, transmission, mounts, or anything like that?? Thanks.

[Elevorett]

anyone know?

[Onimacus]

Its the middle of the night, it might take a couple hours for someone to reply


Im pretty sure it will fit... its just a d16 up from a d15... so its not a huge deal, but I'm still a new around here so the specifics are gonna come from someone else. You will want the pm6 ECU i THINK, don't quote me on that.

[vladlos]

you need to convert from dpfi to mpfi and you need the pm6 ecu. i'm almost certain you can use your dx tranny with the d16.

[Elevorett]

what is needed to convert to MPFI?

[CBURKE]

well i am doing the same thing right now, well i was (mini me now) but yes it does fit, you can use any d ser tranny, so yes you can use your dx tranny. i would try to find the si but if not that's ok. if you can get the wire harness from the si then you can just plug and play. you have to have the injecter box so you can go from 2 to 4 injecters. so you need all that and the ecu but it could save much time and head pain if you do it this way

[Onimacus]

do a search for MPFI conversion... there are a billion posts about it

[bambam89lx]

Originally Posted by CBURKE

......if you can get the wire harness from the si then you can just plug and play. you have to have the injecter box so you can go from 2 to 4 injecters. so you need all that and the ecu but it could save much time and head pain if you do it this way

No, it's not plug n' play to use the si harness. It will not plug and play.

[CBURKE]

i was told it would if you have the ecu the injector box and the harness you can just hook it up that way.

[Sikocivic]

The best way to do it is to keep the DX harness and add the wires that you need for the MPFI swap.

now do a SEARCH for the rest of the info

[CBURKE]

i am now thinking about it y will it not plug n play? if you take out the old harness and put in the si with the si ecu and the si motior y will it not? that is kinda what i am gonna do, but i am gonna do the mini me.

[Shaguar47]

Let me just say that if it don't fit in, we have failed here at AF.

[bambam89lx]

Originally Posted by Shaguar47

Let me just say that if it don't fit in, we have failed here at AF.

lmao

[bambam89lx]

Originally Posted by CBURKE

i am now thinking about it y will it not plug n play? if you take out the old harness and put in the si with the si ecu and the si motior y will it not? that is kinda what i am gonna do, but i am gonna do the mini me.

It just don't fit. Trust me. Trust US. We do know what we're talking about here (some of us). It will NOT just plug in. The crx si has a handful more wires including an extra plug at the firewall as well as 7 extra wires in the harness for the injectors and distributor. The dx doesn't have these wires. So if u go to plug in a harness that has more wires into a car that has less, the plugs and wires won't match up at the firewall. It WONT work. You have to modify the stock harness. This is swap rule #1:
99% of the time you will modify ur stock harness to accomodate for the swap. You don't swap your harness out for the other vehicle's harness.

[amy@af]

because you need to add MPFI which is added wires and the si dizzy. generally i would sit here and give a full speach on what MPFI is and how to do it but i just woke up, L0L.

go to www.4thGenerationCivic.com>how-to>Performance>DPFI to MPFI conversion which is at:

http://www.4thgenerationcivic.com/how-to's/mpfi_conversion.htm