Loud has nothing to do with how much power is produced, unless it has no muffler at all.
Hasn't anyone noticed the (unintentionally humorous) remark "it sounds like a small block!"? No, it doesn't - it's just loud.
Look at the next loud car in traffic - isn't it some little idiot with his hat on backwards, in a Honda with a 6" fart-can? He's sure he's James Bond...
