Quote:
Originally Posted by DGthe3
I think the VVT has more to do with it than DI. Usually engines have a cam profile thats geared more towards the higher end of the RPM range, giving better max hp numbers. That ends up costing you torque at the low end. But with variable valve timing, you can have a profile that works well at low RPMs as well, giving a very broad torque band. Direct injection helps more with how thick the curve is, although I have heard of some low RPM benefits as well.
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Now that I think about it...I agree with you. I should have known, as I'm aware of the VVT as well. I'm thinking the DI does help, but likely helps across the entire RPM range, along with efficency.