O/2 Sensor location

Ed Wright · 11-17-2012, 09:18 PM

Problem with putting it in a primary tube is, if you get something in a jetborvinjector you won't see it in your run log. With it in the collectors, you will see a lean indication. You won't know which Cyl, but you will know which bank. If it develops a misfire for any reason you will see a lean indication, but a misfire from ignition, etc) you won't always hear it at high RPM) will cause an erratic reading. A misfire causes lean spikes. Only way I would want one in a primary would be having one in each tube.
I know I don't know everything, but have been tuning EFI cars for 23 years now, and have done it both ways. I much prefer them in the collectors, at least a foot from the end.

11-17-2012, 09:18 PM	#14
Ed Wright Veteran Member Join Date: Mar 2005 Location: Sand Springs, OK Posts: 8,132 Likes: 896 Liked 390 Times in 170 Posts	Re: O/2 Sensor location Problem with putting it in a primary tube is, if you get something in a jetborvinjector you won't see it in your run log. With it in the collectors, you will see a lean indication. You won't know which Cyl, but you will know which bank. If it develops a misfire for any reason you will see a lean indication, but a misfire from ignition, etc) you won't always hear it at high RPM) will cause an erratic reading. A misfire causes lean spikes. Only way I would want one in a primary would be having one in each tube. I know I don't know everything, but have been tuning EFI cars for 23 years now, and have done it both ways. I much prefer them in the collectors, at least a foot from the end. __________________ Ed Wright 4156 SS/JA