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You are right in that none of us are qualified to comment on this really, but I have to say, those 12v cams have about the same duration as a virgin with a super model, ie, not much!
fe3 cams are 240 and 245deg @ 050
f2t appear to be around the 200 mark give or take 25 (rocker ratio) @ 050
That simply HAS to affect breathing. Any time a modern DOHC user goes from oem 240 to aftermarket 260 breathing and spool improve at all rpms. I can't imagine it would screw up low end flow significantly with such minimal overlap.
Explain that! I'm keen to learn :-)
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