02 Question
12-28-2002, 03:46 PM
#1
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02 Question I installed two of my spare 02's from when I had cats, The reason I swapped the 02's was that bank 2 sensor 1 was always 20 to 30mv higher @ WOT than bank 1 sensor 1, But both my L'trim's always averaged nearly the same -3.8 and -3.9. Now my L'trim's after installing the 02's that used to be my post cat 02's are reading in mv almost identical @ WOT but are causing my L'trim's to average -5.9 B1 to -5.0 B2 and LTFT B1 goes to 0 and LTFT B2 goes to +.78 @ WOT now. Now my Question is am I OK to have that much of a diference in my L'trims? And am I OK to have slightly positive L'trims like +.78 @ WOT If my 02's read nearly identical every time I go WOT? I did get .5* of KR @ part throttle once and right now my base is set +5% on my MAFT. Should I just get some new 02's or should I swap them out untill I find a matched pare and then compare them against a wide band 02?
12-29-2002, 01:05 PM
#2
Re: 02 Question Your car is fine.
O2's aren't dead on accurate. They are very dependant on exhaust flow and location.
If you look under your car you will see that the O2's are not in the same place on either side, and the exhaust structure on either side is different. This can cause some variance in your O2 readings. This difference due to exhaust flow / location becomes more apparent when you start pulling CATs and putting on LT's.
Your car is fine. All your readings look normal.
O2's aren't dead on accurate. They are very dependant on exhaust flow and location.
If you look under your car you will see that the O2's are not in the same place on either side, and the exhaust structure on either side is different. This can cause some variance in your O2 readings. This difference due to exhaust flow / location becomes more apparent when you start pulling CATs and putting on LT's.
Your car is fine. All your readings look normal.