 The emission system is all electronically controlled. You're probably going to get a check engine light and see poor performance. What I would recommend is the more sensible solution. Get another catalytic converter, if you already have one, and get something called CatStrap. This is not a paid product placement, but it's one of the best ways to protect your catalytic converter from being cut out and stolen. It's essentially a physical barrier shield that locks your catalytic converter in place and is cut resistant to sawzalls, circular saws, even chainsaws, which is a bit egregious, but it