Getting some odd #s from my LC-1 wideband, please take a look at my log.

[n8dogg]

I just finished a cam install on an LS1 Corvette. I have replaced the factory narrowband Bank 2 Sensor 1 with my LC-1 Wideband. I have the yellow analog wire going to term A (Tan) wire in the vehicles narrow band connector. While attempting Calc.VET, the wideband seems to read accurate at first, and then starts to raise in value, at one point I think it reads 5.908 lambda! I could be missing something, please take a look at my log and let me know if I am doing something wrong.

kevin m cam idle 2.efi

Thank you!

[joecar]

Did you connect a ground from the LC-1 to the vehicle's narrow band connector...?

[n8dogg]

Did you connect a ground from the LC-1 to the vehicle's narrow band connector...?

No I did not. IIRC my Z06 is set up similar, only difference is I use the vehicles narrowband 12v to power the LC-1, yellow to the signal wire, no ground at connection.

[n8dogg]

Joe, do you recommend keeping yellow LC-1 Analog wire to vehicles low signal, and then wiring the LC-1 White Wire (ground) to vehicles high signal? OR should that be reversed, white to low, yellow to high?

[n8dogg]

Just looked at my own car, I've got white and blue going to ground stud on the frame, yellow and red going to factory narrowband connector, black calibration wire going to battery ground. I'll have to play around with it on Friday.

I just can't remember if yellow LC-1 should go to signal high or signal low?

[Rich Z]

Related to the LC-1, how often should it be recalibrated? And can it be recalibrated while still installed in the exhaust if the car hasn't been started in several days?

[n8dogg]

Related to the LC-1, how often should it be recalibrated? And can it be recalibrated while still installed in the exhaust if the car hasn't been started in several days?

I am not 100% sure but I think you only need to perform a fresh air calibration once or twice a year for N/A cars. I did the calibration before installing into the vehicle.

Hopefully someone will chime in about the yellow analog wire connecting to either high or low signal. I found online someone who put yellow to high and white to low.

[n8dogg]

I think I might have to check the LC1 calibration of lamda, I read others seeing similar issues like -18 LTFT at idle.

[Rich Z]

I am not 100% sure but I think you only need to perform a fresh air calibration once or twice a year for N/A cars. I did the calibration before installing into the vehicle.

Hopefully someone will chime in about the yellow analog wire connecting to either high or low signal. I found online someone who put yellow to high and white to low.

Well, I've got STS rear mounted turbos on the car. And I'm pretty sure it's been around a year since I've installed the wideband sensor. I guess comparing the wideband output with what the narrow bands are reporting would be a way to compare for accuracy? Of course, the narrow bands are NEVER recalibrated so not sure how effective that would be.

Sorry, can't help you with your wiring question, as I'm using the serial interface with harness with mine and am using a separate bung so that the narrow bands don't have to be removed.

[n8dogg]

I'd like to use an additional 02 bung but the headers are ceramic coated and stainless, a bear to drill through.