midas just sucks. my cousins car was loud so she took it there for them to look at it. they told her that there was a hole in the muffler and there is no way that she should even drive the car home. so she asked why. they told her that with the hole in the muffler it could suck cold air in it and put it into the motor and cause it to warp. how the hell would it suck cold air in when theres hot air going out of it?