Quote:
Originally Posted by Munit
I was just referring to the throttle response, not the ability to rev. I had a sprint booster on my n52 engine and it still was no where near as responsive as the s65. The whole purpose of valvetronic is to be even better than ITB at eliminating pumping losses so there must be more to it such as the high CR etc
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Throttle response can be affected by a multitude of other factors, in addition to intake system design. Rotating assembly overall mass, compression ratio, bore and stroke, ignition mapping are just some of the contributing factors.
I think that the increased response you've found in the S65 is a result of just that- a systems approach that optimizes each component of the engine to produce an overall superior outcome.