well ive got a 1990 honda civic dx with a d16y7 bottom end with a d16z6 head and no wiring harness cuz the old one was butchered. So i figured find a Si wiring harness for a 90 civic so its plug and play right? then im not sure what ecu i should use i want something plug and play someone said that i should get a pg7. also im going to get a greddy emanage piggy back system to run the vtec and air/fuel. let me know what i should get for a ecu that would be plug and play thanks!

 

By the way is the civic Si wiring harness is plug and play for a dx model? thanks

 

an si harness is not plug and play because of the resistor box
you need to convert a dx harness to fuel injection and add vtec wires
as for ecu if you want to stay obd0 you could use a pw0 or pr3 from a b16
but it would be better to convert to obd1 and get a chipped p28

 

my friend has the gsr ecu in his del sol it works really good but it shows a code error

 

I agree,,

Convert to obd1 and run a p28..Car will run alot better

As far as the wire harness you can make the si work..Its not plug and play but you can make it work

 

so theres no way if i get a full si wiring harness including the resistor box it wont plug into the dx harness at the firewall? im not worried about the vtec the piggy back will take care of that

 

this civic is my daily driver im trying to make it run for cheap cuz the old motor was shot so im probably just get a vfac instead and use like a stock Si ecu or something

 

hey I am doing a full obd 1 conversion to my a6 with a z6 head and intake manifold....I would like to know some peoples opinions about this swap..i.e. advantages and more importantly disadvantages of this mini me swap compared to just swapping in a complete z6. any input would be appreciated please no flaming...thanx
Casey (ps sorry to steal your thread )

 

Heya!
No a Si harness will not plug and play with a DX chassis. You do not want an Si harness.
What you do want is a MPFI converted DX harness. Which is what Rywire.com can provide.

http://www.rywire.com/dxtodvtec.shtml

 

You could still be OBd-0 and use a b16 ECU (PR3/Pw0)

Chip it and disabled Knock sensor
and burn a p28 mapping

 

ttt

 

DX harness either way, DPFI-MPFI conversion either way, Stay OBD0 and use a PM6 with some thing to activate the VTEC (vfac is one way), or you can:

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Garrett &raquo;</TD></TR><TR><TD CLASS="quote"> use a b16 ECU (PR3/Pw0) Chip it and disabled Knock sensor
and burn a p28 mapping</TD></TR></TABLE>

Personally I still favor:

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Mr.speaker &raquo;</TD></TR><TR><TD CLASS="quote">Convert to obd1 and run a p28..</TD></TR></TABLE>

And let the VTEC be controled the way Honda intended....

 

WIRE IT UP FOR MULTI POINT INJECTION AND USE A PR3 OR PWO ECU
EASIEST AND FASTED WAY RUNS AWESOME.

USED THIS SETUP FOR COUSINS CAR SOHC VTEC 1.6, B16A ECU PR3 DX WIRED TO MULTI POINT.

 

ttt

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by NikoZai &raquo;</TD></TR><TR><TD CLASS="quote">Heya!
No a Si harness will not plug and play with a DX chassis. You do not want an Si harness.
What you do want is a MPFI converted DX harness. Which is what Rywire.com can provide.

http://www.rywire.com/dxtodvtec.shtml</TD></TR></TABLE>

Then run the OBD1 P28 ecu for proper vtec, fuel and timing maps.

 

im trying to stay obd0 and try to keep it as plug and play as possible

 

ttt

 

can i hook a pw0 up to the stock harness after i get a dx to si harness made and have it run normally?

 

OK, in case you missed it the first time:

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Aragorn &raquo;</TD></TR><TR><TD CLASS="quote">DX harness either way, DPFI-MPFI conversion either way, Stay OBD0 and use a PM6 with some thing to activate the VTEC (vfac is one way), or you can use a b16 ECU (PR3/Pw0) Chip it and disabled Knock sensor and burn a p28 mapping.
</TD></TR></TABLE>

 

do they make chips for the pw0?

 

You can make chips for a lot of different ECU, if you have the right software and hardware. You need to do your homework on this subject starting with the "search" feature here. All you questions have been answered here many times before (how do you think I learned.... I lurked a lot and read even more!)

Also try: http://www.pgmfi.org/ For more info on chipping ECUs.

 

okay so i get a multi port harness the pw0 ecu now do i have to move any pins around for the pw0 to function properly. and also which wires do i need to put into the ecu for the vtec activation

 

ttt

 

look online for multi point injection swap it will tell you everything you need to know. mpfi for crx dx

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by imatch &raquo;</TD></TR><TR><TD CLASS="quote">im trying to stay obd0 and try to keep it as plug and play as possible</TD></TR></TABLE>

Cool man. I was just letting you know the proper way to convert it.