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Re: 4500rpm
Firstly, thank you for the screen info. Much appreciated. This IRIS valve seems to me to be a way of increasing gas speed and fuel/air mixing at lower revs, then allowing high flow at higher revs? Works like an intake version of a Yamaha exhaust EXUP valve. I wonder if anyone has tried combining the two? Or is VVT a more cost effective solution?
Does IRIS stand for intake resonance induction system? Or the name of the marketing managers girlfriend.....?
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