Heres a good question..........who has done the most miles with their performace back box fitted??
Reason I ask?? Well.........I'd love to know what the sound difference is between a fresh one and one that is well coked up with soot.
Other reason..........I wonder if its possible to clean them out
![Hmm](http://www.themgzs.co.uk/vb/images/smilies/hmm.gif)
with our kart.......you could remove the exhaust......take the wadding out......and the baffle.......seal up one end (rubber glove and jubilee clip) fill it with old petrol and a can full of washed pea shingle, seal the other end........and then shake it like mad for about 5 minutes on and off
![Grin](http://www.themgzs.co.uk/vb/images/smilies/grin.gif)
. Take the seals off, drop the crap into a bucket for disposal, put the wadding back in.....and the baffle.......cap on end......and voila.....one new quieter exhaust
I wonder if its possible to do something similar with the ZS after a year or so??
Jim