[Tokay444]

Originally Posted by Marrk

Having two injection systems is way too complicated for my money, but if it works, and it's not related to any engine problems, then it's hard to argue against it. But if you are installing oil catch cans and doing periodic walnut blasting of your valves, then I would say no to it. (EDIT: Has any other OEM tried this "solution" for carbon build-up?)

I'm not an expert on the boxer 4-cyl. engine (or on anything else), but my understanding is that with DI you get carbon build-up and a fuel delivery system running at higher pressures in order to achieve an emissions standard. Okay, fine. On a 2.0 inline-4, Honda was able to use VTEC and port injection to produce an LEV powertrain that made 240 hp. I'll take the inline-4 if anyone is offering it — simpler is better.

NOTE: Not trying to start a fight with anyone. I love the FR-S/BRZ, and I'm here to learn from you guys.

That 240hp 2.0L would fail current era emission standards. Too much nox.