|1. Because it sounds like crap and its a total nuisance
2. Because you will be overpaying for something you can have your local muffler shop build for you at 1/3rd the price.
3. Refer to point 1 above.
"Experience hath shown, that even under the best forms of
government, those entrusted with power have, in time, and
by slow operations, perverted it into tyranny."