hey guys after a bit of help. my car is missing under boost when on more than 9 psi. i tihnk eithermy fuel pump needs an upgrade or my sparkplugs are fouled..... got half the day off tafe tomorrow so gonna check the sparkplugs first.... check their quality and age. just wondering where would be a good place to get spark plugs and at a good price?? ive also heard more expensive isnt always better for rb's? as they dont last aslong?? also how do sparkplugs usually last kms wise??
many thanks for your help in advance... not putting up a thread about it cos there is no point.