Thanks for the support mark
Here is what i intend to do:
Replace spark plugs for denso 1 step colder, check for air leaks in and around the plenum chamber,clean the maf and check all nuts on exhaust and cats and check for gas leaks.
Once i have done all these checks i will have a better picture on where to go next. After this it still drives well with slight misfires i will get it on a dyno and see what she does.
I would understand the need to go further into this if the car drove like a bag of nails.....but considering the fact it drives fine and pulls when needed the things i am going to do are just going to further conclude that its the tuning that will sort the car out.