Cobalt LT Magnaflow Muffler
I'm looking at purchasing a magnaflow muffler for my 2007 Cobalt lt. the muffler im looking at is part#11114, it is a 3.5x7 inch oval case and the case is 14inches long. if i am not mistaken the stock piping size for a cobalt 2.2 is 1.75. i bought the car with a nice looking chrome tip and would like to use it to same me some money. i have two choices of piping size for the muffler, 2inch in and 2inch out, or 1.75inch in and 1.75inch out. what would be better.