A good challenge is also to keep the efficiency within check!

I personally managed to make a 2.0L I4 Turbo that produced 150 hp with a 30.5% efficiency! Also, you seem to be running on very expensive fuel (93 AKI) which is not what a 2.0L I4 would normally run on. Think about what kind of gas you would put in a Jetta or something like that that uses a 2.0L I4.

Regular or premium unleaded makes a lot more sense. Last things, emissions are pretty high, take a look at that.
Edit: I saw that only the high-end turbo engine runs on 93 AKI but that's still quite a lot. I'd personally try regular for the NA and premium for the turbo.