88-91 with b18b
08-17-2003, 05:20 PM
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88-91 with b18b
i got a 91 civic si with a B18b engine. i just found out that i have been running my stock PM6 ecu with the ls engine for 2 years. ever since i had the swap i've had this weird o2 problem, so what ecu's do you run a b18a/b in a 88-91 civic? also how do you tell the diffrance between the obd0 pr4 and the obd1 pr4? thanks
08-17-2003, 06:33 PM
#2
Re: 88-91 with b18b (S13 slide)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by S13 slide »</TD></TR><TR><TD CLASS="quote"> i got a 91 civic si with a B18b engine. i just found out that i have been running my stock PM6 ecu with the ls engine for 2 years. ever since i had the swap i've had this weird o2 problem, so what ecu's do you run a b18a/b in a 88-91 civic? also how do you tell the diffrance between the obd0 pr4 and the obd1 pr4? thanks</TD></TR></TABLE>
The easiest is to use a 90-91 Integra OBD0 PR4 ECU. The difference between the 90-91 OBD0 PR4 and the 92-93 OBD1 PR4 is the plug styles. The OBD0 will look exactly like the connectors on your PM6 but the OBD1 will have the gray connectors, same as the 92-95 Civic's.
i got a 91 civic si with a B18b engine. i just found out that i have been running my stock PM6 ecu with the ls engine for 2 years. ever since i had the swap i've had this weird o2 problem, so what ecu's do you run a b18a/b in a 88-91 civic? also how do you tell the diffrance between the obd0 pr4 and the obd1 pr4? thanks</TD></TR></TABLE>The easiest is to use a 90-91 Integra OBD0 PR4 ECU. The difference between the 90-91 OBD0 PR4 and the 92-93 OBD1 PR4 is the plug styles. The OBD0 will look exactly like the connectors on your PM6 but the OBD1 will have the gray connectors, same as the 92-95 Civic's.
08-17-2003, 06:48 PM
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Re: 88-91 with b18b (VTECVillain)
now how would the PM6 ecu even run the Ls? i have bogging, surging problems, havent been able to keep a stable idle for the past 3 years also. and after driving a bit my cel comes on, but then i turn the key off it goes away for a while. the ecu just flashes code one. these would be symptoms of running the pm6 ecu correct? thanks
08-17-2003, 06:54 PM
#4
Re: 88-91 with b18b (S13 slide)
The PM6 will run the motor because it controls the same setup of sensors and the pinouts are the same as the 90-91 PR4. I would say that the reason you are throwing a code 1 is that the car is running very lean and it's fouling the O2 sensor. My friend had the same problem doing a DPFI to MPFI and trying to use OBD2 injectors. It could also just be a bad O2 or the wiring also. Either way you need to get a PR4 OBD0 ECU and check the O2 problem after that.
I have a 91 CRX DX with a 96 B18B1 and I'm using the OBD0 PR4 ECU, distributor, and injectors with DPFI converted to MPFI. I have ran the car that way since the swap about 2 years ago and I haven't had any problems.
I have a 91 CRX DX with a 96 B18B1 and I'm using the OBD0 PR4 ECU, distributor, and injectors with DPFI converted to MPFI. I have ran the car that way since the swap about 2 years ago and I haven't had any problems.
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