Sorry, no, again. It has nothing to do with NA or turbo engines. Throughput mass is the criterion. Tuned intakes - yes, well aware but what they do is achieve better filling of the cylinders.
Last I have to say on the subject.
JS
I agree totally, as I also have a Pipercross filter fitted which made a huge impression on the state of my pants dyno, although this might have had something to do with the accidental Tokyo drifting I did whilst going round a roundabout in the wet.
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