catalytic converter

I want to remove my catalytic converter but before I do, I want to make sure the car won't be affected negatively. I've read that some cars could go into 'limp mode'. I'm wondering if my 2002 Toyota Corolla has limp mode or not before I remove the converter.

Posting in here to get an idea of why my CAT might have gone bad. I've got an automatic 2006 CE with 111k miles. The car passed smog on March 5th. Just bought the car off Craigslist on March 10th, and the CEL came on after driving it about 85 miles. Seller is ducking my calls, so no luck there...

I bought a 2009 Toyota Corolla S from Carmax about 4 months ago. It's got about 83,000 miles on it now and just started making a bad metal vibration sound when I accelerate. I thought it could be the heat shield but two separate mechanics, including a Toyota dealership, have told me that the cat...