LT Header Guys!!! No more extensions or corvette o2s!
#82
The Scammer Hammer
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I haven't crawled under the car yet to confirm... Maybe someone else can chime in
The 2004 Corvette has the same PCM pin outs as the 99-02 FBody. I'm reading (so far) that the Vette guys need O2 extensions as well.
**** on that.
Anyone with a Vette confirm the location of the rear O2 sensor plug, in relation to the location of the bung on a long tube header?
It's better to run the rear O2's on a Vette anyway bc they get hotter than the fronts.
Just wanting to confirm the location of the rear o2 sensor plug-ins in relation to the longtube bungs.
Pics would be a bonus...
The 2004 Corvette has the same PCM pin outs as the 99-02 FBody. I'm reading (so far) that the Vette guys need O2 extensions as well.
**** on that.
Anyone with a Vette confirm the location of the rear O2 sensor plug, in relation to the location of the bung on a long tube header?
It's better to run the rear O2's on a Vette anyway bc they get hotter than the fronts.
Just wanting to confirm the location of the rear o2 sensor plug-ins in relation to the longtube bungs.
Pics would be a bonus...
#85
I'm glad I could contribute to the LS1 community!
#87
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I haven't crawled under the car yet to confirm... Maybe someone else can chime in
The 2004 Corvette has the same PCM pin outs as the 99-02 FBody. I'm reading (so far) that the Vette guys need O2 extensions as well.
**** on that.
Anyone with a Vette confirm the location of the rear O2 sensor plug, in relation to the location of the bung on a long tube header?
It's better to run the rear O2's on a Vette anyway bc they get hotter than the fronts.
Just wanting to confirm the location of the rear o2 sensor plug-ins in relation to the longtube bungs.
Pics would be a bonus...
The 2004 Corvette has the same PCM pin outs as the 99-02 FBody. I'm reading (so far) that the Vette guys need O2 extensions as well.
**** on that.
Anyone with a Vette confirm the location of the rear O2 sensor plug, in relation to the location of the bung on a long tube header?
It's better to run the rear O2's on a Vette anyway bc they get hotter than the fronts.
Just wanting to confirm the location of the rear o2 sensor plug-ins in relation to the longtube bungs.
Pics would be a bonus...
#89
The Scammer Hammer
iTrader: (49)
Something to add for the Corvette Guys, or at least the 04 model year with the square, and not flat style rear connector:
You can still do this mod. I did it (so no extensions for me) but remember this:
The plug on the passenger side reads the DRIVER SIDE, and the driver side plug-in reads the PASSENGER side.
I know it sounds crazy, but it's true. Your car will run like GARBAGE and pop a P0300 if you screw the o2 into the driver side collector and plug it I to the driver side connector.
They MUST be crossed.
You can still do this mod. I did it (so no extensions for me) but remember this:
The plug on the passenger side reads the DRIVER SIDE, and the driver side plug-in reads the PASSENGER side.
I know it sounds crazy, but it's true. Your car will run like GARBAGE and pop a P0300 if you screw the o2 into the driver side collector and plug it I to the driver side connector.
They MUST be crossed.
#90
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Bringing this back up because like a dummy when I installed my longtubes months back I soldered them (stupid BBK instructions) and now after my cam I am having problems with the car running too rich and my tuner believes this is the cause.
So to solve all my problems I am going to do this swap and use my rear o2 sensor cables since they are tuned out. I'm trying to figure this out though, wouldn't there be 16 wires and not 8? The oxygen sensors have 4 wires coming out and into the harness so 8 for the upstream and 8 for the downstream, or am i over thinking this and 2 wires splice together in the wiring harness? Also are the rear post cat o2 sensors the same as the pre cat? When I look the upstream up on rockauto the upstream right has a different part number but the 2 downstream and the upstream left share the same part number. From what I am reading it is just the cable length, am I right?
So to solve all my problems I am going to do this swap and use my rear o2 sensor cables since they are tuned out. I'm trying to figure this out though, wouldn't there be 16 wires and not 8? The oxygen sensors have 4 wires coming out and into the harness so 8 for the upstream and 8 for the downstream, or am i over thinking this and 2 wires splice together in the wiring harness? Also are the rear post cat o2 sensors the same as the pre cat? When I look the upstream up on rockauto the upstream right has a different part number but the 2 downstream and the upstream left share the same part number. From what I am reading it is just the cable length, am I right?
#91
The Scammer Hammer
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Bringing this back up because like a dummy when I installed my longtubes months back I soldered them (stupid BBK instructions) and now after my cam I am having problems with the car running too rich and my tuner believes this is the cause. So to solve all my problems I am going to do this swap and use my rear o2 sensor cables since they are tuned out. I'm trying to figure this out though, wouldn't there be 16 wires and not 8? The oxygen sensors have 4 wires coming out and into the harness so 8 for the upstream and 8 for the downstream, or am i over thinking this and 2 wires splice together in the wiring harness? Also are the rear post cat o2 sensors the same as the pre cat? When I look the upstream up on rockauto the upstream right has a different part number but the 2 downstream and the upstream left share the same part number. From what I am reading it is just the cable length, am I right?
Don't worry about the wire count. Just swap the ones it says and that's it.
#92
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So...I get the whole PCM pin swap part...but am unsure of what y'all are doing with the O2's...
'00 WS6, going to BBK LT's with ORY...
2 O2's will be gone (obviously)...PCM is currently en route to Frost for a basic tune...
Step 1 - swap PCM pins...
Step 2???
Are we using the rear O2's plugged into the rear harnesses?
Rear O2's plugged into the front harnesses?
Front O2's plugged into the rear harnesses?
My apologies that my lil' brain can't figure out this part, lol. I haven't gotten to this part yet, so it may be obvious when I do?
'00 WS6, going to BBK LT's with ORY...
2 O2's will be gone (obviously)...PCM is currently en route to Frost for a basic tune...
Step 1 - swap PCM pins...
Step 2???
Are we using the rear O2's plugged into the rear harnesses?
Rear O2's plugged into the front harnesses?
Front O2's plugged into the rear harnesses?
My apologies that my lil' brain can't figure out this part, lol. I haven't gotten to this part yet, so it may be obvious when I do?
#93
TECH Senior Member
iTrader: (39)
So...I get the whole PCM pin swap part...but am unsure of what y'all are doing with the O2's...
'00 WS6, going to BBK LT's with ORY...
2 O2's will be gone (obviously)...PCM is currently en route to Frost for a basic tune...
Step 1 - swap PCM pins...
Step 2???
Are we using the rear O2's plugged into the rear harnesses?
Rear O2's plugged into the front harnesses?
Front O2's plugged into the rear harnesses?
My apologies that my lil' brain can't figure out this part, lol. I haven't gotten to this part yet, so it may be obvious when I do?
'00 WS6, going to BBK LT's with ORY...
2 O2's will be gone (obviously)...PCM is currently en route to Frost for a basic tune...
Step 1 - swap PCM pins...
Step 2???
Are we using the rear O2's plugged into the rear harnesses?
Rear O2's plugged into the front harnesses?
Front O2's plugged into the rear harnesses?
My apologies that my lil' brain can't figure out this part, lol. I haven't gotten to this part yet, so it may be obvious when I do?
We are re pinning the pcm so the rear 02's plug ins are actually the front.
#94
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I understand that the rear O2's are no longer used for cat efficiency...but the rear O2's (now the only ones threaded into the exhaust) are still plugged into the body side rear connectors, but the repinning makes the pcm look at them as the fronts for air/fuel monitoring, correct?
#95
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I understand that the rear O2's are no longer used for cat efficiency...but the rear O2's (now the only ones threaded into the exhaust) are still plugged into the body side rear connectors, but the repinning makes the pcm look at them as the fronts for air/fuel monitoring, correct?
#96
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I was jumping a bit ahead...finally getting the rest of the BBK pieces in tonight (had to Sawzall the top of the collector flange on the passenger side...no good on the floorboard...and poly mounts already), I see that there are boss' for front O2's as well...I'll have to find some plugs...or just thread the O2's in there and tie or cut the wires, I suppose.
Got the PCM back from Frost today as well...hoping to fire it up this weekend...still have other crap to do before driving tho.