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dochvtecturbocrx88 · 05-18-2004, 12:06 PM

ok my brother has a 90 crx si and were about to put the motor in i was just wondering if there is any wiring to do fo the B18a? Thanks!

brian11to1 · 05-18-2004, 02:31 PM

since hte car is already wired for MPFI I dont think there is. just use hte Si harness.

erebunicrx · 05-18-2004, 06:38 PM

im doing the same swap.

4drcivicb18a · 06-17-2004, 07:41 AM

It depends if the b18a1 is a 90-91 or 92-93 if its a 92-93 you have to change to 90-91distributor, 90-91injectors, 90-91 ecu cause their obdo 92-93 b18a1 is obd1 90 crx si is obd0 and use the crx wiring harness its way easier

CESARSPINS · 11-17-2006, 05:24 PM

I Have A 1996 B18b1 Going Into A Crx!!!!!what Will I Need!!!!!!!!

nikozai · 11-17-2006, 09:56 PM

A. Convert to a OBD1 ECU, still using everything on the OBD2 engine. Alot has to be changed.
B. Convert to a OBD2 ECU. Same deal.
C. Changed the B18b electronics (dizzy/ECU) to OBD0.
All the wiring is done using the original engine harness from your car and can be done for you by Rywire.com. We're also your source for the ECU jumpers that are necessary if you choose to modify the engine harness yourself.
Good luck, talk to you soon ~ Peter

CESARSPINS · 11-19-2006, 05:23 PM

Will I Be Using The Obd 2 Ecu???????

ryangt · 11-23-2006, 12:32 AM

man thats over complicated, get a 91-92 LS motor for it, drops right in (literally) and i only had to extend the O2 sensor wire and wire the radiator fan to a switch and add a aftermarket temp gauge, since theres no provision for it in the hf harness with a b18a engine

05-18-2004, 02:31 PM	#2
brian11to1 Senior Member Join Date: Jan 2003 Posts: 9,000 iTrader: 2 / 100% Rep Power: 111	since hte car is already wired for MPFI I dont think there is. just use hte Si harness. __________________ 90 Integra Sedan B20V 225 / 153 I DO NOT answer tech questions via PM. Use the forums!!!

05-18-2004, 06:38 PM	#3
erebunicrx my name is Dale Join Date: Jun 2003 Location: Bristol ct Posts: 2,111 iTrader: 0 / 0% Ride: cbr 929rr Rep Power: 35	im doing the same swap. __________________ 03 mustang mach1, procharged, built motor, 6sp swap, built rear. 525whp @9psi 00 cbr 929rr 420 conversion -1 +2

11-17-2006, 09:56 PM	#6
nikozai Member Join Date: Oct 2006 Posts: 60 iTrader: 0 / 0% Rep Power: 7	A. Convert to a OBD1 ECU, still using everything on the OBD2 engine. Alot has to be changed. B. Convert to a OBD2 ECU. Same deal. C. Changed the B18b electronics (dizzy/ECU) to OBD0. All the wiring is done using the original engine harness from your car and can be done for you by Rywire.com. We're also your source for the ECU jumpers that are necessary if you choose to modify the engine harness yourself. Good luck, talk to you soon ~ Peter __________________ Owner of Rywire.com http://www.rywire.com ECU Jumpers, DPFI conversions, subharnesses etc...

11-23-2006, 12:32 AM	#8
ryangt Senior Member Join Date: Sep 2004 Location: Riverside, CA Posts: 745 iTrader: 0 / 0% Rep Power: 18	man thats over complicated, get a 91-92 LS motor for it, drops right in (literally) and i only had to extend the O2 sensor wire and wire the radiator fan to a switch and add a aftermarket temp gauge, since theres no provision for it in the hf harness with a b18a engine __________________ 2001 Civic EX 2dr, shes beautiful, soon to be turbo. 1991 Crx dx Ls MONSTER BUILD ys1 trans its a beast.


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05-18-2004, 12:06 PM	#1
dochvtecturbocrx88 Junior Member Join Date: May 2004 Posts: 2 iTrader: 0 / 0% Rep Power: 0	ok my brother has a 90 crx si and were about to put the motor in i was just wondering if there is any wiring to do fo the B18a? Thanks!

06-17-2004, 07:41 AM	#4
4drcivicb18a Member Join Date: Jun 2004 Location: philly, PA Posts: 90 iTrader: 0 / 0% Rep Power: 12	It depends if the b18a1 is a 90-91 or 92-93 if its a 92-93 you have to change to 90-91distributor, 90-91injectors, 90-91 ecu cause their obdo 92-93 b18a1 is obd1 90 crx si is obd0 and use the crx wiring harness its way easier

11-17-2006, 05:24 PM	#5
CESARSPINS Junior Member Join Date: Nov 2006 Posts: 17 iTrader: 0 / 0% Rep Power: 7	I Have A 1996 B18b1 Going Into A Crx!!!!!what Will I Need!!!!!!!!

11-19-2006, 05:23 PM	#7
CESARSPINS Junior Member Join Date: Nov 2006 Posts: 17 iTrader: 0 / 0% Rep Power: 7	Will I Be Using The Obd 2 Ecu???????

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B18a into 90 crxsi