... are you trying to make out I'll damage something doing this??
No, just that by simply hacking bits out of his exhaust aiming for a noise increase, the average Joe will have no real appreciation of the other effects his modifications might have. A lot of work goes into designing an exhaust to achieve best balance of performance versus external noise. Temperature is also an issue, particularly where a pillion might sit on top of the thing and it's in high position where it may be touched accidentally. I've buggered about with box internals in my youth and loved the new noise, but the effect on performance was quite a different matter. Its all the same to me if you think it makes no difference.