ou know that changing the exhaust pipes on your two-stroke motorcycle can have a marked effect on the engine's power characteristics, but do you know why?

Simply put, it's because the two-stroke exhaust system, commonly referred to as an 'expansion chamber' uses pressure waves emanating from the

nice but didn't understand all

YA TOOMEY!!

thanks allot great help

I have a 500kb gif that will help with the visual effect!! My google storage changed it to a jpg and it's too big to upload here.

is this the pic you meant?

yep, that's the pic that should help people who are a little confused.

so i 2stroke uses exaust to make compression. cause with that im seeing exaust going back into the cylinder and being compressed?