Sometimes when Im parking my bike at shopping centres, in the city or where ever I get random people coming up to say g'day or for a chat. Mostly are bike owners, ex GPX riders. One bloke said to me "If you want your GPX to go harder and sound better, all you need to remove/break the exhaust baffle/blaffler. Just get a big long screw driver, stick it down the pipe and whack it really hard untill you can feel it push through" I thought he was just taking the P*ss a bit, however a bit of internet browsing seems to show a few references to this, but just not in a such a 'Do it yourself with a hammer' way. http://www.thumperfaq.com/baffle.htm Can anyone shed some light on this for me? Would love for my bike to sound louder at no real cost, but not really too keen on thrashing him with a hammer and screwdriver.