bullet647

i have 2 hatches (both cars run). Car A has stock DPFI motor and CAR B has OBD1 b-series. I was thinking about putting the motor from CAR B into CAR A. My question is if i swap everything over including engine wiring harness it should plug and play

VtecSyndrome

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by bullet647 &raquo;</TD></TR><TR><TD CLASS="quote">i have 2 hatches (both cars run). Car A has stock DPFI motor and CAR B has OBD1 b-series. I was thinking about putting the motor from CAR B into CAR A. My question is if i swap everything over including engine wiring harness it should plug and play</TD></TR></TABLE>

Nope it won't be plug-n-play unless both cars were DPFI to begin with. MPFI and DPFI engine harnesses do not interchange hence the reason the mpfi conversion is necessary on dpfi cars, other wise you could just swap over the mpfi stuff and be done with it.

All the mechanical parts will bolt right up but the mpfi conversion wiring still needs to be done, it's the fastest and simplest way to get your dpfi car to accept the OBD 1 bseries. I just got done doing my OBD 1 B16 swap mpfi conversion on my '89 DX and I'm almost done with my OBD 1 D16z6 swap on my other '91 Si so I can help you if needed my build thread link in my sig has tons of pics of all my progress.

alscrx

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by VtecSyndrome &raquo;</TD></TR><TR><TD CLASS="quote">

Nope it won't be plug-n-play unless both cars were DPFI to begin with. MPFI and DPFI engine harnesses do not interchange hence the reason the mpfi conversion is necessary on dpfi cars, other wise you could just swap over the mpfi stuff and be done with it.

All the mechanical parts will bolt right up but the mpfi conversion wiring still needs to be done, it's the fastest and simplest way to get your dpfi car to accept the OBD 1 bseries. I just got done doing my OBD 1 B16 swap mpfi conversion on my '89 DX and I'm almost done with my OBD 1 D16z6 swap on my other '91 Si so I can help you if needed my build thread link in my sig has tons of pics of all my progress.</TD></TR></TABLE>

Must use original harness with multipoint conversion. That simple

twedter02

i did that also just i rewired the injectors right to my ecu jumper now comes the body works lots of rust

bullet647

but isnt CAR B already wired for mpfi and obd1..so if the complete engine harness and ecu swaped over what wires do i have to run if there already ran?

VtecSyndrome

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by bullet647 &raquo;</TD></TR><TR><TD CLASS="quote">but isnt CAR B already wired for mpfi and obd1..so if the complete engine harness and ecu swaped over what wires do i have to run if there already ran?</TD></TR></TABLE>

You did not read correctly Car B's engine harness will NOT swap over, you will have to leave that harness w/ the car and what ever motor you do run. to make the OBD 1 swap from car B work you need to convert the original cars dpfi engine harness to mpfi because why again?........ that's right because the engine harness's do not plug n play w/ each other so now do you have it?

dblock8989

yea i wanted to ask u what engine wiring harness would i use if i was swapping a 95 d16z6 SOHC vtec motor out of a SI into a 89 civic sedan dx dpfi ...Like what engine harness would be the best to use please let me noe i had my car for awhile and no one wants to help but everyone has there car running im stuck on the engine harness i have the dizzy,the p28 ecu. the jumper from the ecu i really need help please let me know

B20VtecEF

yea doing a mpfi is pretty simple they actually have a thread or this on honda-tech that makes simple and even a novice builder can do them selves besides ordering one pre-made from a web-site such as hasport