Ok, to make more power you must not only increase the air charge ,but fuel too. Where does it say a fuel management system is included?
It's all bullshit, if your only going for a little more power for short term nitrous is the way.
Those other kits have nothing but a boat bilge pump put into the air intake hose,
save your money and put a couple of those racing stickers on your rig,there good for 20H.P.