I have just finished my first swap It was a 91 hatch DX. I put in a b16a. worked out all of the bugs. well i put on a b&m fuel pressure reg. set the fuel press. at 60 psi (by accident didnt know what it should be but got that worked out) now the car is fouling out plugs 2 and 4. i can change the plugs and it will run great for about two days then they will foul out and the car wil fall on its face until vtec fires at 4500 then its fine again, let off the gas and go back down on the rpm range and give it gas and it falls again constan problem. PLEASE HELP!!!!!!!!!!!

 

Could be o2 sensor related, are u using both? Assuming your still using obd 0.

 

How did you wire the O2 sensors?
It is very common to wire them backwards;
Wiring tips: https://honda-tech.com/zerothread?id=404493

Two pages of info,Look for the replies made by "Camshaft"

 

i ran one of the o2 sensors to the factory and the other dirrectly to the ecu.

 

If you just added one wire you need to swap the two..
O2 sensor #1 is: C16 on the PR3 or PW0 ecu
GREEN oval connector {oxygen sensor A}
monitors cylinders 1 & 4

O2 sensor #2 is:
C8 on the PR3 or PW0 ecu
WHITE round connector {oxygen sensor B}
monitors cylinders 2 & 3

 

i just finished with the o2 sensor swap and the car runs great now thanks for everything. i was going to run at the track tonight but have a bad cv joint. will let every one know the times next thursday.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DX2B16A(SIR) &raquo;</TD></TR><TR><TD CLASS="quote">i just finished with the o2 sensor swap and the car runs great now thanks for everything.</TD></TR></TABLE>
Sure Man,glad to help..