When a high-flow catalytic converter or test pipe is used on a late model car it’s guaranteed that CEL (Check Engine Light) will come on. This CEL is caused by a fault code that indicates an inefficient catalytic converter.
Our CEL eliminator is CNC machined in-house from high quality cold roll steel for a long-lasting effective performance. M18x1.5 thread to make it a universal fit for all standard sensors.
Install this spacer on your REAR (downstream, post-cat) oxygen sensor to effectively remove the code for catalyst efficiency. This is recommended for vehicles factory stock software.
FOR OFF-ROAD or TESTING USE ONLY! This is a universal product that works on variety of vehicles, however it is not effective on some cars.
This product is not intended to and will not provide emissions compliance.
Emissions laws vary by province, state, region or country. Check local and federal laws before modifying your exhaust system.
Emissions compliance is the sole responsibility of the owner.
NOTE: This part does not guarantee that the CEL will turn off. This product is sold as a final sale, no returns are accepted.
| Weight | 1 lbs |
|---|---|
| Dimensions | 6 × 6 × 6 in |
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Brandon Lay (verified owner) –
Works as advertised, nice machining , great adjustability and fit. Highly recommended.
mastery80 (verified owner) –
Works as advertised on a 2022 Audi SQ7 after installing CTS High Flow Cats. CEL GONE!!!
Fuel Trim (verified owner) –
Was delivered fast and worked for what I needed.
Trevor M. (verified owner) –
Eliminated the CEL on my 2012 Golf R; very glad with the product.
Oleksandr (verified owner) –
Connor Dillion (verified owner) –
DAVID MORALES (verified owner) –
It works
Mark Whitney (verified owner) –
You got the highest quality parts around thank you CTS
Simeon M. (verified owner) –
Just what I needed to keep the CEL off from the rear O2 Sensor.
Todd R. (verified owner) –
Great product! Stopped check engine light. Highly recommended.
Anonymous (verified owner) –
Rhian (verified owner) –
Excellent service
Anonymous (verified owner) –
Works beautifully on my mk5 gti. I wasn’t sure if it would since I’ve been seeing heavy fumes but my CEL cleared after ~100 miles!
Shane Hopp (verified owner) –
Great quality but didn’t work on on Supra mk5 which has ETS 4.5 CATTED downpipe, according to ETS not much will fix besides ecu unlock. I’m also pretty currently maxed out on JB4 running on E40.
Landy G. (verified owner) –
This is definitely needed for the test pipe
Michael Diaz (verified owner) –
Easy installation A++ on quality just installed will be leaving a follow up later. On time shipping!
Robbie (verified owner) –
Ryan L. (verified owner) –
Works as advertised. CEL is off and looks like it’s staying that way. E-check passed and everything is good!