The AP turbo kit is on 6psi making 281whp right now with a disco potato on stock header with cats. Pump gas. Not too shabby. 8psi should break 300whp but it will be a bit of a stretch to get there. Right now I suspect the port injectors are tuned to run extremely lean mixtures that isn't ignitable, while the DI system supplies the rest of the fuel demands. Seems the disco may just barely get the DI to max out. Rumors have it the DI are 450cc and the port injectors are a 200-250cc.
Of course, the DI may be 450cc but injector timing has a lot to do with actual flow rate that's usable. So it is probably safe to say the whole setup of injectors is likely around 550cc.
I still want one. Super sentra will find a good home some day.