wideband v 5 gas

[limited cv8r]

Messing around today doing some emissions tuning and at no point did my wideband and 5 gas analyzer ever match AFR's, testing was at idle and 3000 rpm. 5 gas showed 14.7, wideband 13.6, which one would people be more inclined to believe?

[joecar]

Are the wideband and 5-gas analyzer sampling from the same location...?

[limited cv8r]

twin 2 1/2" sytem , probes were up different exhaust outlets,but system has a merge piece were both pipes join then seperate again.

[joecar]

What happens if you swap probes across outlets/tips.

[limited cv8r]

will try that tomorrow,but with the design of exhaust thought afr's should of been closer.

[joecar]

That's what I would think.