first of all i think its about time to replace my fuel injectors and that is 1 thing i dont know anything about. i dont want to get stock injectors back in because ill replace them before i get their use, if anyone could tell me what type of injector/fuel rail/filter/fuel pump to upgrade too that would run the best together and not drain all 25 gallons of gas in 1 hour would be much appreciated. 01 f150 4.6l supercrew 2wd (plan on upgrading to supercharger also but just a possibility)

 

Unless you upgrade to a power adder like a supercharger, larger injectors will make it run bad. The PCM will contantly try to adjust the injector pulse width and it would probably run too rich. You shouldn't have to replace the injectors unless the coil burns out of one or they are really clogged or leaking.

 

i dont know if what i have is enough to upgrade

Mods:Volant CAI, Granatelli MAF, BBK 75mm TB, Airraid TB spacer, Granatelli COP Boots, Hypertech Power Programmer III, Flowmaster 50 series

should i just get new injectors from ford? and when is a high flow fuel rail along with pump and injectors neccesary other than supercharger

 

Your stock ones should be fine for what you have now. Unless you install large cams, with ported heads, a supercharger, turbocharger, or a large dry type nitrous sytem, I wouldn't change them or upgrade the fuel system.
If the injectors are working, I wouldn't replace them at all. Just have them cleaned by a shop with a high pressure cleaning system if you think that they are not performing properly.

 

no need to upgrade them. If they are working then keep them. Your mods don't require bigger fuel injectors.