In most kits they come with a rising rate regulator which ups the fuel pressure with boost. Saves monsy as you don't need new larger injectors but for higher boost options there can be problems with this method. The chip again is designed well for stock engines with low to mid boost levels but if you have any other mods or want to up the boost you can't with that chip. It comes down to what power you want and how much money you are willing to spend. The basic powerdyne blowers are a nice easy blower to install but are fairly limited with max boost being around 8-9psi (which is fine for most sane people anyway).