I have a 2003 Toyota Tundra extended cab. It sounds like I have an exhaust leak but I don't know where it originates from. I've tried to find it, but no luck. It seems to be closer towards the front end in front of the cat. It is definitely an exhaust leak though, that much is clear. I don't want to take it in somewhere just to be taken advantage of. Any tips? Also, I've noticed, it has started to effect performance and acceleration.