[spfan]

all you truly need is a boost controller (and a real boost guage obviously). a datalogger is there to make sure everything runs correctly, and you aren't damaging your engine (mostly knock). stock fuel, if operating correctly, will support 14 psi on an otherwise stock car. if everything operates how it should, you can run 14 psi on a stock car.

i say all this for one reason. i get tired of seeing people say things like "oh you need 450cc injectors, a downpipe, a filter, a walbro fuel pump" or insert-part-here, before you can run 14 psi on a stock car. this is simply not true. if your fuel system is up to par, and you don't have some other wierd crap going on with the car, then you can run higher boost than stock. a datalogger will tell you how much you can run. if you start knocking, then turn the boost back down to the last known safe setting (ie zero knock) and leave it there. now, do all those other parts help make more power? sure, of course. but they aren't 100% needed to run higher than stock boost levels.