O2 Sensors

raptor · 06-03-2003, 06:46 PM

When I changed my starter it fell and broke my O2 sensor. So I'll be replacing both of them. My question is I have seen talk of a wide band O2 what is the difference between wide band and stock. I dont drive my car much a few long trips on the week end and mybe a total of 20 miles a week, so fuel comsuption is not an issue. As for smog testing I got that beat dont have to do it until next year and I know a guy. Should I use a wide band O2 or Stock, Whats the diff What kind of gains or losses. Where do I find a wide band?
Thanks

Mustang_289 · 06-03-2003, 07:45 PM

wide band O2 sensors can actually measure the air/fuel ratio. Instead of switching back and forth like all previous sensor designs, the new wide-band O2 sensor produces a signal that is directly proportional to the air/fuel ratio.

This is really good for computer tuning cars.

jimberg · 06-03-2003, 08:39 PM

You would need a computer that would work with a wide band O2 sensor. Your computer will work with a stock O2 sensor so that's what you should get.

The difference is that a stock, or narrow band, oxygen sensor can only read A/F ratio values in a very narrow band around the stoichiometric A/F ratio. This information is used during closed loop mode to maximize fuel economy and emissions. At WOT, you are running in open loop mode which means that the computer is calculating how much fuel to provide to achieve a rich A/F ratio that is outside of the measurable range of the O2 sensor.

A wide band O2 sensor would be able to measure A/F ratios for the entire range that your engine could safely use. They're usually used for tuning on a dyno.

raptor · 06-06-2003, 12:14 AM

So your telling me my A9L computer can not use a wide band O2 sensor?

jimberg · 06-06-2003, 08:28 AM

Yep, that's what I'm saying.

06-03-2003, 06:46 PM	#1
raptor Registered Member Join Date: Sep 1999 Location: Dundalk, Ont, Canada Posts: 129	O2 Sensors When I changed my starter it fell and broke my O2 sensor. So I'll be replacing both of them. My question is I have seen talk of a wide band O2 what is the difference between wide band and stock. I dont drive my car much a few long trips on the week end and mybe a total of 20 miles a week, so fuel comsuption is not an issue. As for smog testing I got that beat dont have to do it until next year and I know a guy. Should I use a wide band O2 or Stock, Whats the diff What kind of gains or losses. Where do I find a wide band? Thanks __________________ 88GT, 331Stroker,FMS 70mm TB,77mm Pro-M mass air,Ram Air,K&N,GT40/Exployer Intakes,Gasket Matched,FMS 24lb injectors,Crane hi-6 ignition system,B303 cam,Crane 1.6RR,FMS underdrive pullies,351W/heads,port/polish,FMS h/f oil pump,Hedman headers,2 1/2in H pipe Flow Masters,190lph Holley fuel pump,Center Force dual friction,FMS 3.55,Hurst short throw/ trigger T handle,Subframe connectors,Welded torque boxes.

06-03-2003, 08:39 PM	#3
jimberg Registered Member Join Date: Oct 1998 Location: Rogers, MN Posts: 2,089	You would need a computer that would work with a wide band O2 sensor. Your computer will work with a stock O2 sensor so that's what you should get. The difference is that a stock, or narrow band, oxygen sensor can only read A/F ratio values in a very narrow band around the stoichiometric A/F ratio. This information is used during closed loop mode to maximize fuel economy and emissions. At WOT, you are running in open loop mode which means that the computer is calculating how much fuel to provide to achieve a rich A/F ratio that is outside of the measurable range of the O2 sensor. A wide band O2 sensor would be able to measure A/F ratios for the entire range that your engine could safely use. They're usually used for tuning on a dyno. __________________ 351W 89 Mustang GT Convertible

06-06-2003, 12:14 AM	#4
raptor Registered Member Join Date: Sep 1999 Location: Dundalk, Ont, Canada Posts: 129	So your telling me my A9L computer can not use a wide band O2 sensor? __________________ 88GT, 331Stroker,FMS 70mm TB,77mm Pro-M mass air,Ram Air,K&N,GT40/Exployer Intakes,Gasket Matched,FMS 24lb injectors,Crane hi-6 ignition system,B303 cam,Crane 1.6RR,FMS underdrive pullies,351W/heads,port/polish,FMS h/f oil pump,Hedman headers,2 1/2in H pipe Flow Masters,190lph Holley fuel pump,Center Force dual friction,FMS 3.55,Hurst short throw/ trigger T handle,Subframe connectors,Welded torque boxes.

06-06-2003, 08:28 AM	#5
jimberg Registered Member Join Date: Oct 1998 Location: Rogers, MN Posts: 2,089	Yep, that's what I'm saying. __________________ 351W 89 Mustang GT Convertible

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06-03-2003, 07:45 PM	#2
Mustang_289 Registered Member Join Date: Sep 2001 Posts: 512	wide band O2 sensors can actually measure the air/fuel ratio. Instead of switching back and forth like all previous sensor designs, the new wide-band O2 sensor produces a signal that is directly proportional to the air/fuel ratio. This is really good for computer tuning cars.