24psi. k04-022, ive also tapped down my plug gap to .6 cant remember what i have now... wp6 single electrode things. something like that...lol
ahh a smidge more boost than me then. I will see how the Bosch plugs go and if it starts to play up again I will try something else, prob a set of yours
due to my own past issues(on a stg1 20vt)thanks to the the trade card i now change my plugs every service. i was chasing a low power prob for ages did maf etc etc til i got to the plugs