because i'd rather have a cat then have an efi car without one, my vl stank standing behind it and i could barely breath it was that bad, hollowed out cat. going to be using a 100 cell 3.5" metal cat on both the vl and the wagz. and rather have the better chance of passing, instead of paying $1,000 or more to do the test, then fail then have to spend money to get it to hopefully pass then have to spend another $1,000 or more to take the test again. if i win the lotto in wont phase me, but i got zero chance of that cause i don't buy tickets lol.