Ok if you are a ford or SVT engineer or simply work for either, I have a question for you. My dad and I disagree on whether removing the stock H (and catalytic converters) and replacing it with an off road x pipe would be harmful to the car. I say that it will make the exhaust flow better and intern allow the engine to breath easier. He thinks that it will mess up other things in the car and also does not like the fact that MIL eliminators have to be used. He wants proof from someone who is unbiased (like at an exhaust shop) and someone who has knowledge of fords. BTW I have and 03 cobra. Thanks in advance.