i have a new M109r BOSS. Only has 3700 miles on it. ill have to do a spark plug change this next year. just wondering if everyone uses the stock plugs. I've had good luck with NGK. does anyone run the iridium? think the part# is CR8EIX(for the ngk anyway). already upgraded the exhaust with the freedom 2into1 turnout setup. gonna upgrade the intake to the cycle house q5 and have the ecu flashed. just wondering if these mods will require a different plug. any input would be appreciated.