Not true. First, the question of what the injector can deal with is entirely up to the programmed fuel curve and the physical delivery capabilities of the injector itself. Secondly, in a low speed, high throttle opening situation, there is both very low manifold vacuum and relatively low air velocity across the throttle body. In a carburetor, this had to be dealt with through the use of enrichment devices such as power valves (not like those on two-stroke exhausts) and accelerator pumps. These have to be manually calibrated and cannot respond to changing conditions in the venturi very well. An EFI unit has no such natural limitation, and can deliver fuel in the correct amount for any situation it is programmed to deal with. Higher manifold vacuum and air flow comes only with higher speeds. Very weird thing to say, that the throttle will be less open as speed increases? That's you, not the machine. Let me assure you that racing across the dry lake at Superstition, or the front straight at a GP race, mine doesn't behave that way. As far as forceful induction, it will never go fast enough to do that if what you mean is that it would ever force enough air into the air box to increase manifold pressure (boost). The increase in air pressure at the inlets related to speed will, however have an affect on the pressure differential between the manifold and the outside air, and will cause air to flow more freely into the filter. Cut out slots on the sides, on the other hand, are positioned in a way that will more probably reduce atmospheric pressure over them as speed increases. But as I said, you can believe anything you like. ahhh.... but you yourself have stated that the inlet cross section is greater than then the latter path of the airway. if therefore the latter path of the airway chokes down, turbulence and friction loss will occur, therby causing restriction, the same principle as restricting the exhaust. In a finely tned system, all things have been calibrated for the benefit. all this is a moot point, as the injectors have been eletronically programmed to dispense X amount of fuel with the supplied amount of air. more air will not benefit anything, as the ef. will only compensate. therfore i conclude: the injectors and motor in the works units, have been set up to demand a greater amount of air than the stock setup, hence the cut outs. Okay, this is too much for me. All this cerebral stimulus should be saved for things more essential to my existence, like how to improve the intake of money. but thanks for the bench racin.