i am new to site but have not seen this question yet. i have a 2010 cvo softail already 5400 miles. i have read that new closed loop ecm will adjust itself to changes in exhaust . i have changed to d&d slip-on mufflers. bike does seem to run fine. will ecm adjust to low restriction pipes or do i need a race tuner or other fuel management device. thanks keep the rubber side down !!