Optimum Co level for 3.2?

[vancouver86/911]

What is the optimum Co level for a 3.2 Carrera at idle?

[E Sully]

At idle with the o2 sensor disconnected Co should be .6-1%,
HC should be less than 300ppm.

[stlrj]

Originally Posted by E Sully

At idle with the o2 sensor disconnected Co should be .6-1%,
HC should be less than 300ppm.

And that's at the test port before the cat. At the tailpipe...undetectable!

[vancouver86/911]

Are those readings the same if there is no cat?

[stlrj]

Originally Posted by vancouver86/911

Are those readings the same if there is no cat?

Yes.