I'm running EON1 701's by champion.
These were listed for the car (under 1.9 turbo) and halfords (yes, i know but i was desperate, lol) guaranteed me these will work in the car.
It does actually have a misfire under heavyish load, and it does it 88% of the time. all the warning lights are out on the dash, so as far as the car is concerned there is no longer any faults. i am going to get a new air box shortly as recommended. as soon as i hit 5000 rpm, it coughs and slplutters all over the place.
However now it's drivable (at 12 mpg
) so i'm a little happier. Lets just hope my cure is round the corner as i'm out of money and almost out of patience! lol
Really guys, thanks for the help so far, i'll have a word with the local volvo dealership on monday and see how much a genuine set of plugs are