firstly let me apologize for starting this in the wrong place to matt(as i always do)
so its service time i run ngk iridium plugs in everything i have had or have except the vectra as they dont make them for this engine apparently, i run them in my quadzilla 250e and i ran them in my gilera runner and my astra 1.4.
so i found denco iridium plugs but im getting conflicted info do i need itv20 or itv16?
or does any 1 know the difference between the 2