Hi, pls what do you say about condition of my spark plugs ? It's taken from Opel 2.0 16V engine, turbo, low comp pistons (CR 8.5:1), cold termostat (82 degC), running 100 octane fuel, max boost aprox 1bar (advance aprox 21 deg). FW 1.0.73
(http://www.mervart.eu/vems/vems_spark0.JPG)