Can anyone give me some advice regarding the co2 sensors please.
My tuner has told me one sensor is enough to complete the tune where as a guy that has done a
lot of fabrication work for me and has built quite a few fuel injected cars has told me to install two.
I received one sensor with my Holley kit so that's why I'm happy to go with the tuner's advice.
Regards Mando.
For a straight 4 6 or 8 that would be fine to an extent.
But being a v8 2 x 4 cylinder engines basically you are best off running 1 for each bank minimum.
Best location for each one is just before the cats and about 6 to 8 inches after the collector.
This way you get a reading of all 4 cylinders on that bank.
In racing applications they will run 1 per cylinder in order to extract every single hp from the engine and balance every cylinder to match as closely as possible to extend the engine life and durability under extreme punishment from the driver.
As stated above in late model cars they run 4 to help monitor emissions after the cats.
Edited by Shtstr, 23 March 2021 - 10:42 PM.