Cat

Hey i have a 1990 ford bronco, i am considering removing one of the 2 cats and possibly replacing the other with a high flow cat. I was wondering what all removing the 2nd one will give me. I have a flowmaster exhaust and i was wondering if it will make this and louder? and also how much better will i be on gas

It will make it louder (more obnoxious to me). It wil improve performance though, especially if its plugged up.