well heres the deal. everybody says that the mid pipe is more restrictive than the the cat back on our beloved mustangs. however ive heard horror stories about people switching out their mid pipe and having horrible gas mileage poorer performance etc. etc. the list goes on. is there any truth to any of these claims? are they just coincidental? or mod specific? my cars mostly stock actually very stock and i was wondering on how it would affect my car. should i buy it or should i just save my money for gas?