Originally posted by inspyral
I have a 97 Civic. My stock manifold had the primary heated O2 on the #3 runner. Placement of the O2 doesn't necessarilly correlate to it being heated or non-heated. OBD-I cars for the most part use 4-wire heated O2's. The only cars that I have seen non-heated O2's on were non-OBD, or OBD-0. Your P28 will have no problems running a 4-wire heated O2, unless it's been modified to run a single-wire O2.
Yeah, this is so weird. I have a 99, same generation as you. And my stock 02 locations are before and after the cat. Nothing on any of the exhaust primaries.
So inspyral, if your "forward" 02 sensor location is on the primaries, I'm guessing you don't have any on the collector. And I do have an obd2 a-pipe.
so let's see what we got:
your car: 97
donor car: 98
my car: 99
I wonder if the 02 sensor location correlate to OBD2a vs. OBD2b ???
nope
OBDII A (96-97) and OBDII B (98-00) connectors.
WTH
Also, I have it on good authority that the p05 ecu uses 1 wire 02
So, what would be easier, cutting the good flange off the non-bung pipe, and welding it on to my existing a-pipe w/bung.
or
Drill-pressing a hole in the non-bung a-pipe, and welding a bung? Anyone got the specifications of the bung on-hand?
-PHiZ