×

Sale ends todayGet 30% off any course (excluding packages)

Ends in --- --- ---

O2 Sensor Placement

General Tuning Discussion

Forum Posts

Courses

Blog

Tech Articles

Discuss all things tuning in this section. News, products, problems and results. 

= Resolved threads

Author
1580 Views

Hey Andre,

Do you have any input on the placement of a WBO2 Sensor in relation to a Catalytic Converter. I have seen many people use a Tail Pipe Mount for their O2 Sensors, which is obviously Post-Cat. Wouldn't this affect their AFR reading and give an inaccurate measurement? Thanks for any input!

I know there is a belief that the catalytic convertor will effect the lambda values being measured, however under steady state conditions or for example during a normal ramp run on a dyno, the accuracy of the reading isn't affected. You will find that the post cat readings are a little slower in their response to fast transients though.

Here's a useful resource that looks into the cat's effect on AFR - http://www.dtec.net.au/Lambda%20Testing%20Pre%20Vs%20Post%20Converter.htm

Hey Andre,

I had actually come across that link before, the results seemed reasonable. I just was curious as to your experience/methods. Thanks for the input!

We usually reply within 12hrs (often sooner)

Need Help?

Need help choosing a course?

Experiencing website difficulties?

Or need to contact us for any other reason?