I am not sure how this would play into it but the SVT Focus Zetec has a Dual Stage Intake which switches the intake runners at a certain RPM to increase HP in the upper RPMS.
I am not sure if this would be part of your potential project. You would need a way to control this if it is.
BTW, there are NO readily available chips for the SVT Focus because no one seems to be able to figure it out.
