I have a 7m with stock intake pipes except the resonator which is gone runs straight into the maf which has been modded to richen fuel (the good ol TRD way) then after that just a filter but i did that spectre tubing from the filter tip, routed it down the the front bumper and have the front right gof light removed so the tube just ram airs and not guna lie. It pulls decently for just a small intake design. compared to not running the ram air it feels about 50% less power.