Hi , I have just joined this site and this is my first post, so if its in the wrong forum i apologise in advance. Please be gentle with me.
i am trying to improve my engine management skills and although i have see these data pids before on vauxhalls ( not sure about other makes)
i have just ignored them, but ignorance is not bliss and i would like to know what they mean, and if posable broadly what values i should expect to see.