I would like to use a wideband o2 sensor in my UK Civic Type-R with PRA ECU. I have read through this forum all morning but haven't managed to find all the info I need :oops:
I have the Mugen header with cat which I think has 2 points for o2 sensors. Can I replace one of the existing o2 sensors with the Innovate LC-1 to get wideband o2 for datalogging from the wideband analog output and use the LC-1 narrowband output to replace the stock o2 sensor input into the ECU? I do not want to have to modify the header as it was expensive.
I'm new to this kind of thing so any help would be appreciated!
PRA ECU - WIDEBAND O2 SENSOR?
you have missed what he was asking....Spunkster wrote:You can use an aftermarket wideband to datalog readings, but you cannot run the car in closed loop with the wideband. You must retain the stock primary O2 sensor to keep from getting error codes.
LC-1 has two outputs, 1 wideband (5V) 1 narrowband (1V)
the narrowband one mimmics std narrowband senders, so yes, you can use it for the PRA's input, the only fun bit is emulating the heater/disabling the heater error... (have done this with a 50ohm resistor).
Thanks for the replies guys :-)
I'm quite happy to leave the existing primary sensor doing what it is doing fine just now. I'll put the LC-1 in the secondary location and use it for datalogging through the ELD input.
Stuart, do you know if the new sensor will fit in the secondard location without modification, ie the same thread? I have a feeling they all use the same thread anyway as we sell universal lambda sensors which all have the same thread.
Also, should I be able to run in closed loop using the secondary o2 by connecting the narrowband output to the existing wiring? Not that I need to but might as well wire it up when I'm down there, just in case the primary one packs it in.
I'm quite happy to leave the existing primary sensor doing what it is doing fine just now. I'll put the LC-1 in the secondary location and use it for datalogging through the ELD input.
Stuart, do you know if the new sensor will fit in the secondard location without modification, ie the same thread? I have a feeling they all use the same thread anyway as we sell universal lambda sensors which all have the same thread.
Also, should I be able to run in closed loop using the secondary o2 by connecting the narrowband output to the existing wiring? Not that I need to but might as well wire it up when I'm down there, just in case the primary one packs it in.
Will it read the AFR/lambda correctly after the cat? As long as it does that I'll be happy. I'll just disable OBDII/emissions error checking.Stuart wrote:senders are all the same thread...
not sure about using the LC-1 as the secondary input, never tried that...
in theory it should work, but I suspect that the differences in responce will be enough to trigger a MIL, remeber it's there to test for CAT function, not closed loop.
I have Civic Type-R with PRA ECU. I have been running for more than one year without problems with an external wideband O2 module (TechEdge) with dual output. The wide band signal (0-5 V) is connected to ELD pin for data logging, while the narrow band signal (0-1 V) is connected to the primary O2 pin. I'm without CAT so I'm not running the secondary O2. P0135 (O2 heater) and emission error checking (Sec O2, FTP, PA,ELD) have been disabled.
After a bit of google research I think I will have to put the LC-1 in the primary location as the AFR should be different after the cat if it is doing its job, which it better be as it is new and was pretty pricey!
So, I will connect the narrowband output to the existing primary wiring and the wideband output to the ELD input for datalogging.
What is this about emulating the heater/disabling the heater error? The LC-1 has a heater but I assume it just needs to be connected to a cable running from the vehicle ignition (cigarette lighter power cable?) rather than the existing sensor's heater wire (if it has one???).
So, I will connect the narrowband output to the existing primary wiring and the wideband output to the ELD input for datalogging.
What is this about emulating the heater/disabling the heater error? The LC-1 has a heater but I assume it just needs to be connected to a cable running from the vehicle ignition (cigarette lighter power cable?) rather than the existing sensor's heater wire (if it has one???).
If you are running the cat, you should put the LC-1 sensor in the primary location and you could keep the secondary O2. In that case you don't need to disable emission error checking (Sec O2, FTP, PA,ELD). If you don't want to disable P0135 (O2 heater), you can put a 1K ohm 50W resistor in the primary O2 heater wire, but in my opinion it is not worth.
Thanks for info. I'll order one tomorrow, install it in the primary location when I get it. I'll just disable the P0135 and emissions error checking anyway. The cat's just to pass MOT without having to replace it or find a "special" test centre :-)Maverik wrote:If you are running the cat, you should put the LC-1 sensor in the primary location and you could keep the secondary O2. In that case you don't need to disable emission error checking (Sec O2, FTP, PA,ELD). If you don't want to disable P0135 (O2 heater), you can put a 1K ohm 50W resistor in the primary O2 heater wire, but in my opinion it is not worth.
I'll post an update once it is fitted....
On the subject of simulating the narrowband signal, do I need to program the LC-1 to match the expected signal?Maverik wrote:I have Civic Type-R with PRA ECU. I have been running for more than one year without problems with an external wideband O2 module (TechEdge) with dual output. The wide band signal (0-5 V) is connected to ELD pin for data logging, while the narrow band signal (0-1 V) is connected to the primary O2 pin. I'm without CAT so I'm not running the secondary O2. P0135 (O2 heater) and emission error checking (Sec O2, FTP, PA,ELD) have been disabled.
no, the default works fine... (narrow band only has to cycle from >.2V to < .07V)carbonctr wrote:On the subject of simulating the narrowband signal, do I need to program the LC-1 to match the expected signal?Maverik wrote:I have Civic Type-R with PRA ECU. I have been running for more than one year without problems with an external wideband O2 module (TechEdge) with dual output. The wide band signal (0-5 V) is connected to ELD pin for data logging, while the narrow band signal (0-1 V) is connected to the primary O2 pin. I'm without CAT so I'm not running the secondary O2. P0135 (O2 heater) and emission error checking (Sec O2, FTP, PA,ELD) have been disabled.