magnaflow question

[opiefavors]

Quick question. I was thinking about putting on a dual in single out magnaflow on my 2500 Yukon XL. They don't sell dual in single out from what I have found.

Are they reversible? Thanks

 

[NathanJax]

magnaflows are reversible, but why would you want to do that... that's going backwards in regards to increasing air flow.

 

[opiefavors]

The factory exhaust is dual 2 3/4 all the way back to the muffler. After the muffler it Y's into one. It seems to me that everyone that has duals all the way back complain about drone. I saw this on a truck forum and they said it had a 4 inch single exit dumped under the bed with no drone. I don't really see a performance loss with it except maybe in the higher rpm. I tow a lot so I need the bottom end torque also.