The intake didn't make it laggy at all, the shocking turbo/kit did along with a poorly spec'd engine. (in terms of head/cam choice). Infact I have the car in at the moment to have one of our GT28 kits fitted, so we'll see the HUGE difference in the midrange. A correctly spec'd intake will not lose any spool. Infact it should improve it along with top end power. We are working on a new intake manifold at the moment, it will be even better than the others. However the cost might scare some people off so we're also keeping the tried and tested intakes. I'm not surprised by the fact a car with less peak power beat it as there wasn't much area under the curve on his graph. With this new kit on there the powerband will be much different/better. I don't have too much time so i'll keep this brief. The 4e 5e argument will go on further. As it does with many cars. I.e. Evo's/Civic's etc where you can get the same head but different capacity. Generally speaking and at lower power levels the rule is as you'd think. Bigger is better. However at higher power levels the smaller engine is generally my preference. I.e. In a drag scenario.