Hello, my friend replaced the stock exhaust on his 01 cobra and I have his exhaust. I needed a muffler for my jeep so I cut one off and installed it. I put it on backwards, so I was wondering if these mufflers had a flow direction or would it be alright like it is. Help please.

 

It is a delta flow design, like a flowmaster, so yes, you should fix it before the baffles get busted out