Power FC tuning ???
09-09-09, 11:39 AM
#1
tuning ???
would this work for tuning with fc- datalogit if i eliminate the gauge and just run the wires to fc-d
or will i need
AEM Wideband Uego Controller
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Bosch LSU4.2 5-wire, wide-band O2 sensor. goes for 50 - 80$$
if this can work it would be more affordable for people with laptops or carputers
09-09-09, 12:14 PM
#3
A "Wideband 02" (AKA "WB02" or just "WB") is a system. Unlike the common narrowband O2 sensors that everyone is used to, Widebands need more than just the sensor to work.
There are two parts to a WBo2 system. The sensor and the controller.
The sensor looks much like it's narrowband counterpart. It screws into the exhaust and has wires coming out of it. The way the WB sensor works, though, is much different than a narrowband.
A controller is required to operate the WB sensor. Unlike the stock narrowband sensor, which simply generates a voltage based on A/F ratio, the WB sensor requires sophisticated circuitry to measure A/F ratios. There is no wire you could tap off the sensor and have it put out a voltage like the narrowband sensors do.
A Bosch or NGK Wideband o2 sensor is useless without a controller
The WB controller connects to the WB sensor and reads the A/F ratio. The controller can then do anything it wants with the data. Depending on the brand/type of controller you buy, it could do one or more, or all of the following:
Output the A/F Ratio to a built in display
Output the A/F Ratio to an external screen
Output digital data to a serial port for display/datalogging with a PC or PDA
Output analog data (a voltage representation of the current A/F ratio) to a wired output.
Analog outputs
Many controllers have one or more analog outputs. These outputs generate a voltage based off of the current A/F ratio reading and can be scaled in different ways. Most WB Controllers have two outputs, one "Simulated Narrowband" (I'll use SNB for short) output and one "Wideband" output.
The SNB output is generated by the controller by scaling and manipulating the signals from the Wideband sensor to simulate the 0-1 volt output of the stock narrowband. Because of this scaling and manipulation, the SNB output is typically not useful for reading accurate A/F ratios, but it can be used in place of the stock narrowband sensor. This would allow you to eliminate the stock sensor. In order to do this, you would remove the stock narrowband sensor and connect the SNB output wire to the ECU via the wire that the stock sensor was connected to. The SNB output will act just like the stock narrowband o2 sensor and keep the ECU happy. It is worth noting that the stock O2 sensor location is typically not suitable for the WBo2. Refer to the instructions of your particular WB for information on proper location.
The WB output is typically a 0-5 volt representation of the A/F ratio. This output is scaled, but not manipulated like the SNB output so it can be used to accurately read A/F ratios. Different controller brands scale this 0-5v output differently. Some controllers allow you to program how you want the output scaled, others have a fixed scale. Most controllers have a linear output, meaning the output is directly proportional to the A/F ratio. It is important to know if the controller you are buying has a linear output.
So you have this 0-5volt output, what do you do with it? You connect it to an engine management system that can convert the output back to a human-readable A/F ratio.
Cut and pasted from here. https://www.rx7club.com/rtek-forum-168/widebands-what-you-think-you-know-but-dont-577999/
There are two parts to a WBo2 system. The sensor and the controller.
The sensor looks much like it's narrowband counterpart. It screws into the exhaust and has wires coming out of it. The way the WB sensor works, though, is much different than a narrowband.
A controller is required to operate the WB sensor. Unlike the stock narrowband sensor, which simply generates a voltage based on A/F ratio, the WB sensor requires sophisticated circuitry to measure A/F ratios. There is no wire you could tap off the sensor and have it put out a voltage like the narrowband sensors do.
A Bosch or NGK Wideband o2 sensor is useless without a controller
The WB controller connects to the WB sensor and reads the A/F ratio. The controller can then do anything it wants with the data. Depending on the brand/type of controller you buy, it could do one or more, or all of the following:
Output the A/F Ratio to a built in display
Output the A/F Ratio to an external screen
Output digital data to a serial port for display/datalogging with a PC or PDA
Output analog data (a voltage representation of the current A/F ratio) to a wired output.
Analog outputs
Many controllers have one or more analog outputs. These outputs generate a voltage based off of the current A/F ratio reading and can be scaled in different ways. Most WB Controllers have two outputs, one "Simulated Narrowband" (I'll use SNB for short) output and one "Wideband" output.
The SNB output is generated by the controller by scaling and manipulating the signals from the Wideband sensor to simulate the 0-1 volt output of the stock narrowband. Because of this scaling and manipulation, the SNB output is typically not useful for reading accurate A/F ratios, but it can be used in place of the stock narrowband sensor. This would allow you to eliminate the stock sensor. In order to do this, you would remove the stock narrowband sensor and connect the SNB output wire to the ECU via the wire that the stock sensor was connected to. The SNB output will act just like the stock narrowband o2 sensor and keep the ECU happy. It is worth noting that the stock O2 sensor location is typically not suitable for the WBo2. Refer to the instructions of your particular WB for information on proper location.
The WB output is typically a 0-5 volt representation of the A/F ratio. This output is scaled, but not manipulated like the SNB output so it can be used to accurately read A/F ratios. Different controller brands scale this 0-5v output differently. Some controllers allow you to program how you want the output scaled, others have a fixed scale. Most controllers have a linear output, meaning the output is directly proportional to the A/F ratio. It is important to know if the controller you are buying has a linear output.
So you have this 0-5volt output, what do you do with it? You connect it to an engine management system that can convert the output back to a human-readable A/F ratio.
Cut and pasted from here. https://www.rx7club.com/rtek-forum-168/widebands-what-you-think-you-know-but-dont-577999/
09-09-09, 01:04 PM
#4
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I thought I read that the WB02 plugs directly into the datalogit and then you have to "calibrate" the readings in the datalogit. Essentially the datalogit has the WB02 controller capability built into it, maybe I am remembering wrong, I have not played with one yet.
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09-09-09, 08:40 PM
#8
when you buy a commercially available wideband system (PLX, AEM, FJO, Innovate, NGK, etc) it will always come with a controller that should be able to output the 0-5v signal to the Datalogit. Most systems come with a display as well, with some exceptions (Innovate widebands need a separate display purchased). Some systems have the gauge and controller in one unit (AEM).
09-09-09, 10:34 PM
#9
innovate motorsports came out with LM-2 digital Air/Fuel Ratio Meter and Datalogger
The new LM-2 "Basic" Kit (Single Wideband O2) includes the LM-2 meter, Bosch wide-band oxygen sensor, 8 ft sensor cable, cigarette-lighter power adapter, USB cable for PC connection, weld-in bung and plug, LogWorks software CD, and quick-start guide. P/N: 3837, MSRP $349 ...
i have seen it in action works well on OBDII not shour if it will work for rx7 might have to go with LM-1
the rx7 store
got two options for AEM
one with guage for $220 single chanal
and other for about $340 dual chanel 0-5v and 0-1v---Accurate to 0.1 AFP so they say
when they say single wide band i assume they are refering to 0-5v
going to call them and see...what they say should work good
The new LM-2 "Basic" Kit (Single Wideband O2) includes the LM-2 meter, Bosch wide-band oxygen sensor, 8 ft sensor cable, cigarette-lighter power adapter, USB cable for PC connection, weld-in bung and plug, LogWorks software CD, and quick-start guide. P/N: 3837, MSRP $349 ...
i have seen it in action works well on OBDII not shour if it will work for rx7 might have to go with LM-1
the rx7 store
got two options for AEM
one with guage for $220 single chanal
and other for about $340 dual chanel 0-5v and 0-1v---Accurate to 0.1 AFP so they say
when they say single wide band i assume they are refering to 0-5v
going to call them and see...what they say should work good
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