a question for rowland regarding cooper air box mods ?
as im sure you are aware the cooper air box inlet has 2 resinator chambers on the pipe i know mini mania have already done a new air box but do not sell the pipe seperatley im considering a few mods to the stock air box (10mm hole in the bottom of the box and k&n high flow filter) what would you say the merits of these were over a 57i induction kit which is my other option
