TT APS kit... was a former employee of Z1. Never actually saw any kits with problems. (didnt really read up on it either) Very very good investments. There is a car presently at the shop putting down right around 500HP on a 350z... the car is running rich as hell but is making awesome power. (something weird with the air fuel if im not mistaken) Cars normally with the APS kit will run right around a 12.4 or so in the 1/4. (all depending on the driver... seen 11's with a 75 shot...)

If you get one with weird air fuel...u could be looking at a mid 11 sec car on boost to high 10 sec. car without spray.