Running a high-flow catalytic converter or test pipe on a late-model car almost always trips a Check Engine Light from a catalyst-efficiency fault code. The CTS CEL Eliminator solves that by moving the rear oxygen sensor out of the direct exhaust stream so the code clears.Details CNC machined in-house from high-quality cold-roll steel for long-lasting performance M18x1.5 thread for a universal fit on standard oxygen sensors Installs on the REAR (downstream, post-cat) O2 sensor to remove the catalyst-efficiency code Recommended for vehicles running factory stock software For off-road or testing use only. This is a universal product that works on a variety of vehicles, but it is not effective on every car and does not guarantee the CEL will turn off. Emissions compliance is the sole responsibility of the owner — check your local and federal laws before modifying your exhaust.Emissions disclaimer: This product is intended for off-road, race, or closed-course competition use only and is not legal for use on pollution-controlled vehicles operated on public roads in most states and provinces. You are responsible for compliance with all applicable emissions laws. Please check your local laws before purchase and installation.Ships from our Vancouver shop — KORE SPEED is proudly Canadian-owned, with no surprise cross-border duties for Canadian buyers. Questions on fitment? Email [email protected].
