Anyone sell a splitter to allow you to connect two o2 sensors to one bung on the exhaust?

I wanna Wb02 but don't want to drill into the OEM exhaust due to warranty concerns.

 

I highly doubt drilling into an exhaust system would void a warranty.

 

Maybe not, but why not use a splitter if one's available?

 

cuz it will absolutely mess up your readings

 

Would not work.

 

OK.. I will defer, but can anyone actually explain WHY it wouldn't work?

 

Because it would be placing the sensor too far away from the exhaust flow and would not get a accurate reading.

 

How do you figure that? Aren't some of the vendors using spacers for the o2 sensor bung to prevent CEL's?

What I visualize in my head is a splitter that would only protrude about 2-3 inches from the exhaust. Since the exhaust system is pressurized, the o2 sensor should get a reading right?

Maybe I could use the Zietronix zt-2 with nb-o2 simulating?

 

I'll try to answer this:

The reason vendors/owners are using spacers or defoulers on the O2 sensor is for that exact reason. It prevents a CEL because it limits the exhaust gasses that the sensor sees. This is great for the stock secondary O2 sensor, because we don't WANT it to see it! The second O2 sensor is basically a check to ensure the catalytic converter is functioning properly, and if you remove the cat, the sensor does it's job.

However, if you want an ACCURATE reading, which is exactly the case if you want to add a wideband O2 sensor for monitoring purposes, you want it in the correct location. If you use a splitter, it will "split" the amount of exhaust visible to the sensor, which will result in inaccuracies.


Hopefully that makes sense! I would recommend simply drilling a second hole. It really won't affect your warranty, as you aren't really doing anything...

 

Not trying to be an A$$, but how does splitting it cause it to be inaccurate?

For example:

1 gal of water
add 1 cup of bleach
bleach content would be XXX ppm (parts per million)
pouring the ablove mixture into 2 half gallon containers would not change the mixture, it would still be xxx ppm.

Any fluid dynamics pro's wanna chim in

 

this isn't fluid, and there' are certain thermodynamic thresholds that need to be reached by the sensor for it to function properly

if you move the sensor further out of the exhaust stream you lose that heat, you lose direct access to the exhaust stream and lose accuracy on a sensor that is designed to sit directly in the exhaust stream.

 

Yeah like others have said, the sensor needs to be in the main exhaust flow to get an accurate reading. Here's an analogy - compare how the wind feels when you stick your hand out the window versus when your hand is inside the car with the windows down.

 

 

ok...I yeild, you guys win I still think it *could* work as the analogy above doesn't contain pressure in a closed system.