thanks edxr8,
im currently getting aprrox 17/18lt per 100km around town, that's driving normal and not hard. How much would you expect this top change after getting all the work you quoted done?

17-18l/100 is a bit too much already. The basic thing is that with these mods you are actually increasing efficiency of the engine so if you drive sensibly you shoudl see an actual decrease in fuel usage. The downside is that you have a lot mre power to play with so when you start giving it hell you fuel economy will go to hell too.