i've heard of some people using it and they love it, mainly because its so easy to install and use
i went to the NMRA race in bowling green this weekend and saw a kit upclose, it actually looked pretty cool, the bag it comes in is a very nice duffel bag
as for using it, i probably would say to stay away from it, it just seems unpreditable to me, most of the guys here will tell you to stay away from dry nitrous kits period, let alone one this simple,
i say get one if you want, but try it on a buddy's car first
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88 Notch, B&M Ripper, 3.73's, Ported E7's, Explorer int. w/ ported lower, pulleys, 1.7RR's, BBK headers, off-road H-pipe, flowmasters, subframes, 65mm TB, March ram air ,MSD coil, U/L control arms, 155lph f/p, Crane Adj.FPR, Nitto drag radials, best 1/4--> 13.76@101.4 on a 2.17 60ft