Quote:
Originally Posted by serialk11r
I really don't like this new crop of turbocharged engines. They all advertise full boost at just over 1000rpm. To get that most of them are decreasing the turbine efficiency as they aren't using VGTs, and building up quite a bit of backpressure in the exhaust (even with electronically controlled wastegates I imagine). A 1 liter engine is probably going to be at high enough load levels on the highway to generate some non-trivial amount of exhaust pressure like this.
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To ford's credit, the 1.0 is a closed deck iron block motor and at low load (highway cruising) they can use an open TB, open waste gate strategy that minimizes back pressure most of the time. Essentially functioning like an NA motor. The engine management strategy on most of Ford's ecoboost engine is completely different from the classic cable throttle and boost controlled wastegate we all know and love. That said, I still prefer a normal size 4 cyl non turbo motor with DI. The 2.0 mill in the focus is a descent sounding mill at high revs.