They have done 35900miles, which IMO s far far far to long on anyset of plugs let alone on an engine of a performance nature.
Their is a noted difference between the old and new plugs, it feels alot less wooley, crisper and pulls better from low engine RPM's.
It was abit of a game to change them, easy enough, just afew peripherals to take off first like header tank (no need to drain coolant), and air box + the side angine bay covers.
Your thoughts ???
