The fact that it is "...literally manufactured...." and that they can't spell 'laser' or 'revolutionary' would worry me. Also the fact that they use the Yank spelling of 'utilizing' would suggest that these are simply imported cheapies and the seller actually has nothing to do with the manufacture.
....and since when has 'metallic catalyst technology' been 'revolutionary'? Don't all cats use metal?
I suggest you make a cup of tea, Google "magnaflow cat problems" and then sit down for half an hour and have a (long) read....
