Not sure why it's not widely known, but when you make any, even small adjustment to a motor and the exhaust is an integral part, you change performance characteristics and not only the exhaust note.
When a motor decelerates the ecu is programed to burn off unspent fuel at that instant due to emissions. So when you alter the exhaust you have results not intended by the stock ecu and stock piping.
That's why some tunes for cars and bikes dump more fuel at that juncture to induce more of the crackle n pop.
It's just as much a fad with exotic super cars that you canswitch on the fly.
When a motor decelerates the ecu is programed to burn off unspent fuel at that instant due to emissions. So when you alter the exhaust you have results not intended by the stock ecu and stock piping.
That's why some tunes for cars and bikes dump more fuel at that juncture to induce more of the crackle n pop.
It's just as much a fad with exotic super cars that you canswitch on the fly.
