BMW E36 318i, 116 PS, M43 / Drive on the german "Autobahn" 

Yeah, I think it´s because the E46 ist heavier than the E36.

Then yours isn't working properly. I have the E36 316i 1.9L and can do 200kph no problem. The 318i has exactly the same motor but different cam shaft and intake valve.

auf vollgas etwa 18-20 das sind immernoch 8 liter weniger als bei meinem 328i :D

If u delete DISA, you loose the low end torque. You could have just bought a spare one from junkyard. Most of them work, because usually it's either cracked vacuum lines or one-way vacuum valve is shot. When DISA is working properly, it can definitely be felt.

its a great car for the price, and for long distance the 4 cylinder is a good choice. I have one too. If you want to drive more comfortable check out the E39 or the E46.

for long distance better go for 5 sereises, the 3 series is perfect for city and small distances like 4 hours of driving