you are correct, that sentence does say it all "THIS SUB SECTION (3) does not apply.... which means that it does not apply to subsection (1)... (1) Every motor vehicle shall at all times be equipped with a muffler in good working order and in constant operation to prevent excessive or unusual noise, and no person shall use a muffler cut-out, bypass, or similar device upon a motor vehicle on a highway.
in the end it is your desicsion, just trying to pass on some direct wisdom.
Pablo
Pablo, I always welcome your insight and perspective on these issues.
Thanks, '22