Just stuck on APN "header" and doin' a flowmaster 40 muffler. Stock pipes still.
Will it make that much of a dif if I put a 2.5" tailpipe on the muffler? I mean power sound and mileage differences as opposed to leavin' on the stock pipe out of the muffler. I only have time to do it today so any thought greatly appreciated. hanks lol
