Hello, iam Kelly Lewis, Have a two coffee day!

Will Removing Cats Cause Check Engine Light?

If the car in question is equipped with OBDII (or the international like), where the cat is being monitored by a second lambda sensor (O2 sensor), the only side effect of removing the cat would be the check engine light (CEL) would illuminate to show the secondary lambda issue.

HOW TO KEEP YOUR CHECK ENGINE LIGHT OFF WHEN REMOVING CATALYTIC CONVERTER

This is for all the people who wanted to do a

How to keep the check engine off when removing catalytic converter

In this video I how you haw to fool your computer into thinking you still have

how to remove check engine after removing catalytic converter simple

have a drill bit and drills a big enough to fit your o2 sensor.