alot of 1.8t guys seem to feel the need to change their plugs ever oil change or sooner, using 4644’s(6097) but honestly i went almost 25k on a set of them, and the gap was dead on. i know ray changes his alot, but ive seen what he takes out, c16+ antilag do a number on them. running pump gas most of the time i dont see why he couldnt get 5k atleast out of them(he = ryan)