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Originally Posted by adsayer
smoothing the ports and shite allows the air to remain in laminar flow (the opposite being turbulent) for longer thus less restriction. so technically it will aid the engine sucking in more air upto its capacity.
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absolutely, but there has to be more air being forced in in the first place (ie turbo.s/charger ) though which was my point.
not the remap which gets more air in, but the lift and duration of the cam(s). even so, without a raised limit then you'll hit 57 in 2nd, not 60 which is the point of the whole thread.
put it this way- you have an rs turbo, you fit a cosworth throttle body but keep standard boost. are you getting more air in? no. up the boost however (ie FORCE more air in) and the bigger throttle body does it's job.