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Have just started looking at this, starting to check pressures around the body.
I figured ram air should ease the load on the turbo and hence get some economy improvement as long as the setup does not introduce a new drag area, so I am thinking or drawing air from behind the front grille.
One question I was thinking of is that it will pressurize the inlet system slightly pree turbo, but this is also where the PCV dumps blowby gasses in from the crankcase, will this cause more blowby to be retained in the crankcase by pressurising it, is this an issue?
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