Quote:
Originally Posted by serialk11r
Oh well if it's not smooth then I can see why there would be a lot of restriction.
D4-S is the fuel injection system, you mean Valvematic? I thought in press releases they said it eliminated the need for a throttle body. Variable lift+duration is a much better way of controlling air intake than a throttle. I don't see why they can't coexist, the port injector just needs to be timed properly when used in less than WOT situations where the intake isn't open as long.
I was thinking variable valve lift would affect tuning in some way...for one thing maybe the mass airflow sensor would respond differently to the "pulses" of air? Perhaps ITBs will not net much of a gain? Just wondering if anyone knows anything.
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Oops sorry you're right I was thinking of vavematic.