O2 sensors
05-15-2011, 03:24 PM
#1
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O2 sensors
I need new O2 sensors for an exhaust I am putting together. Has anyone had good luck replacing sensors from a particular vendor? Prices online vary which generally means quality does too.
I have two full exhausts for my car now, well, from the cat's on back. The "relatively" stock one is for Lime Rock with noise restrictions.
The other set I have is going to have the cat's guts removed and cans baffles opened a bit.
Either way, I need new sensors.
My understanding is the one's BEFORE the cat control the fuel/air mixture. Definately want new ones there.
The sensors AFTER monitor the health of the cat, essentially (responsible for most check engine lights). I may use new ones there too.
Any feedback appreciated. I have four weeks until I go to a unrestricted noise track.
I have two full exhausts for my car now, well, from the cat's on back. The "relatively" stock one is for Lime Rock with noise restrictions.
The other set I have is going to have the cat's guts removed and cans baffles opened a bit.
Either way, I need new sensors.
My understanding is the one's BEFORE the cat control the fuel/air mixture. Definately want new ones there.
The sensors AFTER monitor the health of the cat, essentially (responsible for most check engine lights). I may use new ones there too.
Any feedback appreciated. I have four weeks until I go to a unrestricted noise track.
05-15-2011, 10:30 PM
#2
Race Director
I need new O2 sensors for an exhaust I am putting together. Has anyone had good luck replacing sensors from a particular vendor? Prices online vary which generally means quality does too.
I have two full exhausts for my car now, well, from the cat's on back. The "relatively" stock one is for Lime Rock with noise restrictions.
The other set I have is going to have the cat's guts removed and cans baffles opened a bit.
Either way, I need new sensors.
My understanding is the one's BEFORE the cat control the fuel/air mixture. Definately want new ones there.
The sensors AFTER monitor the health of the cat, essentially (responsible for most check engine lights). I may use new ones there too.
Any feedback appreciated. I have four weeks until I go to a unrestricted noise track.
I have two full exhausts for my car now, well, from the cat's on back. The "relatively" stock one is for Lime Rock with noise restrictions.
The other set I have is going to have the cat's guts removed and cans baffles opened a bit.
Either way, I need new sensors.
My understanding is the one's BEFORE the cat control the fuel/air mixture. Definately want new ones there.
The sensors AFTER monitor the health of the cat, essentially (responsible for most check engine lights). I may use new ones there too.
Any feedback appreciated. I have four weeks until I go to a unrestricted noise track.
My best advice would be to use the same sensors as the car came with, or new ones if the current ones are suspect.
The engine controller is designed with these sensors in mind, their warmup, response time, and other characteristics.
If you resort to to using aftermarket sensors... their behavior coupled with the changes to the exhaust may make your job of sorting the exhaust system out a living hell.
Or, you can pick up 'compatible' aftermarket O2 sensors and try them. They are cheaper than 'factory'. And they may work.
If you go for aftermarket be very careful you know what you need, what the engine needs: Some 911s (the 996 Turbo for one) use wideband sensors in the #1 (before the converters) sensor positions and these sensors are not interchangeable with the sensors in the #2 (after the converter) positions.
Like I said... uncharted territory. But good luck regardless.
Sincerely,
Macster.
05-15-2011, 10:43 PM
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I need new O2 sensors for an exhaust I am putting together. Has anyone had good luck replacing sensors from a particular vendor? Prices online vary which generally means quality does too.
I have two full exhausts for my car now, well, from the cat's on back. The "relatively" stock one is for Lime Rock with noise restrictions.
The other set I have is going to have the cat's guts removed and cans baffles opened a bit.
Either way, I need new sensors.
My understanding is the one's BEFORE the cat control the fuel/air mixture. Definately want new ones there.
The sensors AFTER monitor the health of the cat, essentially (responsible for most check engine lights). I may use new ones there too.
Any feedback appreciated. I have four weeks until I go to a unrestricted noise track.
I have two full exhausts for my car now, well, from the cat's on back. The "relatively" stock one is for Lime Rock with noise restrictions.
The other set I have is going to have the cat's guts removed and cans baffles opened a bit.
Either way, I need new sensors.
My understanding is the one's BEFORE the cat control the fuel/air mixture. Definately want new ones there.
The sensors AFTER monitor the health of the cat, essentially (responsible for most check engine lights). I may use new ones there too.
Any feedback appreciated. I have four weeks until I go to a unrestricted noise track.
