When your car smokes it has not neccesary have to do anything with the injected quantity of fuel.
The timing of injection is most important, if you start to early, you wont have excessive smoke, but therefore you have cylinder peak pressures which bust your headgaskt sooner or later ( to name the least damage), but if you inject to long after TDC, the combustion efficiency is going down the hill rapidly.
This is, because the piston is on its way down again already and you dont have the possibility anymore to burn this fuel what is still injected.
The combustion process is incomplete then and the whole process loses efficiency, it generates more useless/damaging heat and makes the car smokey.
And as a second, its not only the turbo which must be able to deliver enough mass air flow, also the cylinder head must be capable to flow the neccesary amount of air for clean combustion.
And guess what: The PD head is restrictive, its no kind of "free flow" thing.
If you want a clean A/F ratio, then the head is at its end at 230bhp, the air flowing through the head then reaches super sonic speed around the valves which gives an uncontrollable instable airflow which is again ruining any kind of efficiency.
All these things just let me smile of 240+hp numbers, given by UK- tuners, and NO, its not different measuring in Austria, its kind of different anywhere else than in UK.
I dont mind that, i am happy with my maxed out injectors and "crappy" 210hp, cause i know its a fast car anyway.
And i know, none of those tuners claiming those 230-240hp numbers will EVER say their numbers a inaccurate.
For a simple reason: Business. (Just think how many people who paid for getting this kind of power would knock on their door, when they would ever say: "Yes, its correct, we cant make 240hp with stock injectors....")
Hell would break loose for them...
Have a nice evening,
Alex
