hone eagle wrote:
Dont dismiss single vs twin too lightly, they dont spend that kind of money X a million units without a very good reason ,in this case pressure ramp up is earlier in the torque curve then a single - more torque more sooner.
I'm not dismissing them, of course there are reasons. I mentioned spool up time. Two smaller turbos spool up quicker than one big one. They also work well with V engines because they can put a single small turbo on each bank instead of running all the exhaust through a single larger one. Four cylinder Ecoboost use a single turbo. Ford didn't invent twin turbo's, they had been around for some time.
