[Domo2106]

While cleaning my engine bay I noticed my lambor sensor is right up by the turbo I have a sports cat fitted with 2 ports for the lambor sensor one up by the turbo where it's currently fitted and another after the cat near where the center section joins am I right in thinking the lambor should be installed after the cat ? It's a 2002 bug eye sti also it only has 1 lambor sensor is that right as my old 2005 wrx prodrive had 2 ?