It is nippy of the mark, you have change gears quite quick....when u hit 3rd it takes longer to change/speed build up escpeciall in forth...but used to the impreza used to have.... we opted for this focus because it's !Removed! beautiful and not many are fully equipped like ours as standard.... and it's a derv.... our scoob used do like 17-20 at best mpg.... focus does like 44 round town.
Cone back from bognor Regis last week approx 240m and was s constant 67 to the gallon.... carnt !Removed! fault it.....
You have probably already reached the "economic" limit for the engine - you could get more power out of it - but you would have to spend a lot more money in proportion to that additional power
Whatever you drive you will get accustomed to the power - but the speed limit has always been the same and has not changed - 150HP is probably all you need for legal speeds anyway
People have very different ideas of what "quick" is
You could always just leave it 'till you wear something out/ something breaks (eg the DMF or turbo) and replace it with upgraded components (eg an SMF/uprated clutch or hybrid turbo) - other than that its probably not worth the expense for the realatively small gains you would get for the outlay
The 2.0L Focus TDCI can produce 170+hp from a remap alone, this would cost "penniys" compared to what you would need to spend on the 1.8 to get that sort of power, - the 1.8 is a tough old engine though, compared to the PSA ones
The gears on a diesel are closely spaced at low speeds/ lower gears and wide apart at higher speeds/ higher gears - this is the opposite of a petrol car and has to do with the (width of the) power band and the torque characteristricts
The gearbox acts as a torque multiplyer in the lower gears, and as you go faster the load increases -so the tractive effort is higher at lower speeds in lower gears the drag increases exponentially and is a square law - so there is 4 TIMES the aerodynamic drag at 120 as there is at 60, - its not just your Focus that is like that - even a 1200HP Veyron acts in the same way (but at higher speeds!) - if you plot an acceleration vs time chart, it starts off steep (amost vertical, then as the car goes faster and changes up, it levels off untill the plot line goes horizontal (stops accelerating) )
so as the speed rises the acceleration slows (on any car, apart from very high power & low geared rally/ and some race cars)
There are still some things you can do without braking the bank, though