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Old 06-23-2006, 04:34 PM   #1
AlxSti
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Default O2 sensor with accessport?

im intalling my tbe and ap tonight.. all i have left is the o2 sensor. should i double up on the anti foulers, leave out the o2 all together, or just plug it into the new downpipe? i know the ap gets rid of the o2 cel, but not sure if i need it still... sorry if this has been gone over before.
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Old 06-23-2006, 04:51 PM   #2
ihavebettersound
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I'm going with the 2 spark plug antifoulers.
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Old 06-23-2006, 04:54 PM   #3
AlxSti
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yeah.. i might do that. i dont think the rear sensor has anything to do with closed loop fueling.. its just for the cat efficency cel. but.. maybe ill just screw it back into the new dp and see how she runs for a while. i dont have any of those anti foulers around.
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Old 06-23-2006, 07:01 PM   #4
hondaeater69
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you don't need the rear sensor to be plugged in at all, so it deosn't matter what you plug the hole with.
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Old 06-23-2006, 08:03 PM   #5
Valhakar
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Corect you can do away with the rear O2 sensor if you have an AP. The CEL is eliminated.

I am sticking my wideband O2 sensor in that spot this weekend as I am too broke to get the bung welded into the downpipe.

-Dave
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Old 06-24-2006, 01:00 AM   #6
edykh
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How can i turn off CEL using the AP? I am new for AP.
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Old 06-24-2006, 08:00 AM   #7
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It does it automatically when you load in the maps.
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Old 06-24-2006, 11:18 AM   #8
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yeah.. and if you have any other codes you wanna clear you just select "reset ecu" and it will clear the codes but keep your base map.
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Old 06-24-2006, 03:02 PM   #9
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Quote:
Originally Posted by ihavebettersound
I'm going with the 2 spark plug antifoulers.

wrong-o

just screw the sensor into the pipe and the AP will kill any 'codes' it sees.....doing anything else with AP may cause other issues
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Old 06-24-2006, 04:14 PM   #10
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Leave them in during emissions test though. This "should" allow the readiness monitor to read ready for the rear O2 sensor.
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Old 06-24-2006, 04:24 PM   #11
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My rear o2 has been removed and a Wideband inserted in its place. No CEL, no ill effects. The rear o2 sensor is for the efficiency of the rear cat. After the first 40-50K miles it does little as the cat is maxed most of the time anyway.
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Old 06-24-2006, 05:05 PM   #12
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Quote:
Originally Posted by Valhakar
My rear o2 has been removed and a Wideband inserted in its place. No CEL, no ill effects. The rear o2 sensor is for the efficiency of the rear cat. After the first 40-50K miles it does little as the cat is maxed most of the time anyway.
Understood about teh CEL, but readiness monitors are different. Readiness monitors are what they check in an OBDII emissions test.
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Old 06-24-2006, 07:11 PM   #13
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Quote:
Originally Posted by scoobdude
Understood about teh CEL, but readiness monitors are different. Readiness monitors are what they check in an OBDII emissions test.

and the AP will also take care of the readiness monitors for the rear 02 sensor without it being plugged in (as well as the stock EGT sensor ).
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Old 06-24-2006, 11:20 PM   #14
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Really? Mine shows "not ready" (plugged in with no cats and cels turned off). Let me get a few more drive cycles in and see if it goes away (just reflashed again last night). If anyone has any more info on exactly what works please post up.
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Old 06-25-2006, 02:21 PM   #15
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many have passed the OBDII readiness tests with the acccessecu technology (cobb ap) with no cats/02 sensors/EGT sensors. As long as the map is setup properly and there are no other wiring conflicts. It's wonderful technology
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Old 06-25-2006, 02:54 PM   #16
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Quote:
Originally Posted by hondaeater69
many have passed the OBDII readiness tests with the acccessecu technology (cobb ap) with no cats/02 sensors/EGT sensors. As long as the map is setup properly and there are no other wiring conflicts. It's wonderful technology
I don't doubt that at all. You can have 1 fail and still be good. Only problem is last time i checked... i had 2 (rear o2 and evap system). I found the drive cyle for the evap system but have not checked if it works yet.
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