I'm thinking of installing an O2 sensor, can someone tell me if the bung for the sensor can be installed after the CAT.....I had a sensor bung installed but it was suggested that it be after the CAT but I have read elsewhere that it should be before it.

Could someone confirm which location it should be in ?

Thanks a bunch....

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Ottawa, Ontario, Canada
2007 - 2.4 - Black - Hahn Stage 3, Hahn Hi-Flow CAT, Solo SQR-2, Norm's Finned Diffuser & Fenders, GReddy BOV & PRofec-B Spec-II B/C, Autometer Mech Boost & Electric Oil Temp gauges, DDM Two gauge A-Pillar POD & Powdercoated valve & engine covers, Illuminated WR, JPM Centre Console, Arm Rests & Visor Covers, Stubby Antenna
Team Solstice 2008