Quote:
Originally Posted by Dimman
@ arghx7 With the D4-S we get the advantage of working with port or direct as we see fit (or do we? Does the ECU tuning software allow independent duty cycle adjustments of the different injectors?), so if chasing high flow we still have a port system if that generates more power.
But I think our current crop if tuners has a LOT of learning to do both with just NA basics and the combination injection , and I don't think most of them will take the effort required to expand their own knowledge. |
ECUTek does have the ability to control the injection blend between the two but I'm not sure what the practical limits to that are.
I'll say this. If knock isn't an issue due to E85, you're probably better off going with a high flow intake port, high lift cams, etc, and disabling direct injection. But how many parameters do you have to optimize, and how much time and money will it take to get there? You'll have the combustion efficiency from better mixture preparation, and knock won't be an issue. BUT fuel displaces air during the intake stroke, so that can hurt you. Only an in-depth study could tell you what the optimum combination is.
In the end though you end up with sort of like an expensive Honda engine with two banks of cylinders.