The best i could get with the bigger intercooler and the custom chiptuning whas this:
I drove with that a little bit futher, and hit 1086 km when i filled it back up.
Exact 70l, witch gave me an average of 6.45 L/100km. That's 0,75l/100km les then the average of the fill ups before.
I don't know if the benefit coms from the better intercooler or from the chiptuning or from both, but there was a great benefit from my investment: 10,4%
Payback distance: 100 000km
=> 5,8 years
But this is the first run after the installation, and fuelprices are always rising, so it will be shorter
Hopefully...
Next mod, witch cost almost nothing:
Installing a boostgauge.
Before i shifted always at a given rpm and accelerating was on certain fuelconsumption numbers that the scangauge displays.
Now, at what amount of boost do i want to accelerate at anny gear?
I use 0,5 bar of boost, exept when i drive above 70km/h. Then i use 0,8-0,9 bar, otherwise it cost me 10km to go from 70km/h (=0,15-0,2 bar when driving a constant speed) to 100km/h (= 0,4bar when driving a constant speed).
Guess what fuel consumption i have now?