Version 3.6 -Updated for 1.45 -Included 4 Series sound -New exhaust samples for JBS kit and primary sound -3 stages exhaust valve system included (sidepipe, stock, stacks) -Over all improvements How to use 3 stages exhaust valve system: 1. Hold light horn button for 1 second (and not later that 1.5 second) 2. press J again but do not hold, and now the tone should be changed 3. To change the tone back just repeat the same process Credits: slav jerry