Making a Lambretta exhaust quieter

I have a KBA exhaust, and it's pretty noisy. I have a theory that disrupting the air-flow near the exit point, and making it more turbulent, might reduce the 'pop' which is I think is the source of a lot of the noise. I also reckon this will have no impact on performance.

Now this is just an experiment at this stage, but I've dropped a discreet pop-rivet into the end of the exhaust to create the turbulence. I'll let you know a later date if it seems to have worked or not!



If it doesn't work then I'll have experiment with a baffle of some sort.