JAY,

Each to there own, but i had ngk's plug's for a bike, 3,plugs one was faulty
after running till engine got warm, so since dont use them, most people
swear by them as best, i buy ford plug's AGPR 12PP8'S UP TO 1.6,BAR,
and AGPR902P COOLER THAN PP8'S, FOR 2,BARMAX,, sensor wise the main sensors to check, map, throttle switch,and coolant temp sensors are all checked,, your map sensor is 3,bar so will have different reading to book data std 2,bar.?? As all seem's to checkout everything above, try plug's Fuel delivery after regulator 2.5litre's a min, or devide by 2 for 30seconds.

DAVE R.