upper vs lower o2 sensors vs tuning
04-13-2011, 10:02 AM
#67
unless the ability already exists I doubt they would spend so much time on it... it's not like they have source code and can do whatever they want. the DTC disable is actually a function of Consult II that they probably reverse engineered by comparing byte codes in the ECU.
04-24-2011, 06:04 AM
#71
Based on the length of the O2 bungs on the Art pipes I can only imagine it has a similar, if not worse affect than my antifoulers did. Keep in mind the 'negative' affect is richer A/F's in low load areas... so you won't lose power, it's mainly just fuel economy. I doubt people installing Art pipes looking to squeeze out as much HP as possible are too concerned with MPG. The reason I was so concerned because I've got HFC's and the rich A/F could eventually lead to premature failure. I'm also just **** about my fuel trims and A/F readings... I assume most people with ART pipes (N/A) don't have A/F gauges anyway so...
Last edited by djamps; 04-24-2011 at 07:49 AM.
05-01-2011, 01:58 PM
#72
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Ever since Cipher was released I noticed that my idle AFR is “dancing”, 5 years on Crafordz cats which had no antifoulers, and year now on ART pipes which have antifoulers built in. Since last set of ART pipes was installed (I am on the third set now), I am seeing P0037, but no CEL yet.
EDIT:
In my case idle AFR “dancing” is from ~13.9 to ~15.5 and NOT between 12.5 and 14.0 that djamps was experiencing. The point that I was trying to make was that antifoulers in my case made no effect on AFR.
Only time I had ECU adding fuel on already rich idle AFR was when one of my cats was clogged.
EDIT:
In my case idle AFR “dancing” is from ~13.9 to ~15.5 and NOT between 12.5 and 14.0 that djamps was experiencing. The point that I was trying to make was that antifoulers in my case made no effect on AFR.
Only time I had ECU adding fuel on already rich idle AFR was when one of my cats was clogged.
Last edited by dovla; 05-01-2011 at 04:19 PM. Reason: additional info
05-01-2011, 04:18 PM
#74
Ever since Cipher was released I noticed that my idle AFR is “dancing”, 5 years on Crafordz cats which had no antifoulers, and year now on ART pipes which have antifoulers built in. Since last set of ART pipes was installed (I am on the third set now), I am seeing P0037, but no CEL yet.
05-01-2011, 05:16 PM
#75
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Easy to replace yourself if you have jack stands or ramps, but not cheap.
www.courtesyparts.com has them for $150 and www.advanceauto.com has Bosch for $160. Just pick your car & then search for "O2 sensor" on either site.
www.courtesyparts.com has them for $150 and www.advanceauto.com has Bosch for $160. Just pick your car & then search for "O2 sensor" on either site.
05-30-2012, 06:48 AM
#76
Is there a difference between Lower o2 Sensors and Downstream Sensors? I recently ordered 2 Lower Sensors (Left & Right) and they are different than the ones that are on the cats. My tech installed my ART Pipes finally got the sensors off the stock cats, but they were very stripped, hence ended up having to order sensors. But basically the Lower sensors I ordered have a different plug (square-ish) so it doesn't plug into the car. The OEM ones off the cats are more rectangle-ish.
I looked on Partsgeek.com and they have the OEM ones by Denso and they labeled those "Downstream". Other ones were labeled Upper or Lower. I Thought Downstream and Lower were supposed to be the same? Or is the Lower meant for somewhere else?
I looked on Partsgeek.com and they have the OEM ones by Denso and they labeled those "Downstream". Other ones were labeled Upper or Lower. I Thought Downstream and Lower were supposed to be the same? Or is the Lower meant for somewhere else?
05-30-2012, 11:19 AM
#77
As i stated in the PM, 24450 is the NGK (NTK) part number for the post cat sensors on your car. What was on the boxes for the ones you received.
Also, ignore pics for this kind of thing, they're (in this case) usually stock photos and you can't go off them.
Also, ignore pics for this kind of thing, they're (in this case) usually stock photos and you can't go off them.
Last edited by F2CMaDMaXX; 05-30-2012 at 11:22 AM.
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