my third s550 gt so it was easier this last time. i get a grey plastic cap at the hardware store for about 70 cents! i got an air raid mit which deletes it at the intake tube.
i had a local muffler shop delete mine with 2 1/2" pipe and 3" to my 3" catback. took them a while to custom bend and weld but still cheaper than buying the mak and still paying someone to weld.