Hey guys, new to the forums, been checkin them out lookin for ideas for a while now, this is my first post. Car is an 05 XR6 Turbo, 6spd manual, in velocity, (sedan) Current engine mods are k&n panel filter lol Planning to do secondary CAI next, the goal is to get around 275rwkw safely on stock clutch The question is what spark plugs are recommended as I've been told by a mechanic that I usually trust that I don't necessarily need to go to a colder plug and a smaller gap as most posts suggest on here. Also if I were to go to a colder plug with a smaller gap would I be able to install these myself and drive it to a tuner to get tuned? And does anyone know a good tuner who works with the CAPA flash tuners in perth? GTI Performance Centre has been recommended to me. Thanks in advance