I have one... LOL. I'm kinda biased, so take this review with a grain of salt.
It works great... reduced my 1/4 mile time by over a second! Previously, I had massive wheelspin in 1st and 2nd, and even a bit in 3rd gear.... best time was only a 13.3 @118. After installing the unit, and with just one outting at the track, I managed a
[email protected] just the perfect amount of spin to keep you going... not too little to bog you down, and not too much to make you lose control or stand still. The launch control works great too... my 60' time went from 2.4-2.5 sec average to 2.0sec (my Z has an OS Giken triple plate clutch... i.e. there's no way in hell to slip it = bad launches). You have no idea how it feels like launching with the turbos already spooled up (well, ok, all you auto guys out there know what it feels like... hehe).