maxxdout

need some resources to help figure out dual point to mulitpoint swap for a crx swap out. Anyone with info or links... it would be much appriciated

TIA

Nextelbuddy

well i do know that u are going to need the resistor box from the multipoint cars and add 2 injectors i beleive. it would be a lit easier to use the crx si harness and add vtec wires.

maxxdout

well i dont have that so...........all i have is whats left of a b16 harness with the ends cut off and the stock dx harness.

VTECVillain

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by nextelbuddy &raquo;</TD></TR><TR><TD CLASS="quote">well i do know that u are going to need the resistor box from the multipoint cars and add 2 injectors i beleive. it would be a lit easier to use the crx si harness and add vtec wires.</TD></TR></TABLE>

It is not possible to use the Si or HF harness in a DX or STD Civic/CRX because the plug styles on the shock towers will not match up. You will need to use your stock DPFI engine harness and add 2 wires to the ECU for the extra injectors, 2 to the ECU for the CYP, switch 2 wires on the TPS and add the injector resistor box. It seems like a lot but it's really simple to do. If you need help let me know.
For parts you of course need a PM6 ECU, 88-91 Civic/CRX Si or HF distributor, a set of OBD0 injectors and a resistor box. An 88-91 Civic/CRX or 90-91 Integra MPFI harness would be great, but if you don't want to buy the entire harness you will at least need the injector plugs.

maxxdout

as mentioned earlier, i have the wire harness that came with the b16 less the large end plugs as well as the ecu for the new motor. Currenly i am going through the entire harness figuring out which wire is which on the cut off ends.

What will i need from here???

TIA

poison

here's a site that kenji made that has worked for several multi point conversions i've done.

http://hybrid2.honda-perf.org/tech/4gdxtozc.html

89crxturbo

Man I've been looking for someone that know what there talking about for awhile Ijust swaped a zc out and put a si in out of my 91 crx into 89 crx hf no spark people tell me I got to tap wires into the ecu but they don't know how please help me ASAP I've been waiting for two weeks.oh it is mpfi.and I'm using the si engine harness

89crxturbo

well actualy i had a zc motor in it befor and I'm using the si engine harness but a hf internal harness so any help would be greatly aprec.

locash

If your car is a CRX HF, use the original engine harness from the HF, as the HF and Si harnesses are not wired the same.

Keep it simple.

89crxturbo

but will the hf engine harness plug into the si engine?

Muckman

iTrader: (2)

Why not just swap over the engine harness, dash harness and ecu?