I was thinking about the fuel system trying to find a company that does high performance injectors. What I read that surprised me is that the 1.6 has the fuel injector right next to the spark plug, firing pretty much directly down in to the cylinder. I had thought it was on the side like the 2.0. Looking further, I thought the injector was a Bosch but it seems like Continental might be the OEM, especially when their press releases indicate that their new MSI XL3 injector entered production in an un-named 4 cylinder 1.5 liter gasoline turbo direct injection engine earlier this year (sounds like the EcoBoost 1.5) and their older generation MSI XL2 injector is a 6 hole that sounds like what the 1.6 has. From what I've read it seems like the 1.6 has many fathers, base engine design dates back to Yamaha, high pressure fuel pump and ECU(?) by Bosch, turbocharger and TiVCT(?) by Borg Warner and injectors by Continental. Any way, the XL2 injector is designed to work at 150 bar while the Bosch high pressure fuel pumps can work at 200 bar or more. If we are really lucky the XL3 injector will be physically and electrically compatible because its a 250 bar injector and would probably move the bottleneck to the pressure output of the HPFP which could be increased by a cam with more or taller lobes. I want to look at what the 1.0 EcoBoost has, but this might explain how the 1.6 may have an injector size issue.