I've definately got an exhaust leak of some type, but I'm not possative where. Midas says that its at the flex pipe. He showed me, and it does look ratty but I couldn't see where it was leaking. Anyway since this started my car has been noticable weaker, and the milage has dropped by about 3 mpg. So basically what I'm asking is would that happen with a leaky flex pipe?