Quote:
Originally Posted by Porsche-O-Phile
I believe the F1 engines from the last few years have also used pneumatic valves. It's a better system in terms of performance.
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F1 engines have pneumatic valve springs not pneumatic valves. From the video, it looks like Koenigsegg still has steel valve springs since the pressure loss would be too great for a street car vs an F1 engine that only needs valve spring pressure for 2 hours.