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Modern direct injection can eliminate the throttle then add cylinder deactivation and variable cam profiles to that. A non-hybrid can also be optimized to have just enough power for cruising speed and the ability to add more power when needed.
What is missing on current cars with cylinder deactivation is the ability to lock it in and then add more throttle to put the motor in a more efficient throttle/rpm as soon as you add just a little throttle the computer kicks you out of cylinder deactivation.
The 2015 Chevy trucks now have direct injection and cylinder deactivation. I am interested in how well they might do in real world but would also like to see new engines built from the ground up with this in mind rather then add-ons to old motors which is what Chevy has done.
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