I have the FIPK and I am very pleased... There are a number of high quality intake kits on the market for a little less money but I would recomend getting a decent one. I bought the cheap ebay version and the thing let a TON of dirt in (build up on the tube and manifold)
Their dyno charts cant be wrong, because it is illegal... but SCEWED is for sure the truth... its probably a motor hooked up to a machine that is able to tweek peramiters... after installing the FIPK they probably make some modifications and recieve 17hp at the CRANK! (17 at the crank is not 17hp...)