my question is how much fuel I'd need to run with my setup. here is my list of mods
-s4 street ported motor
-bnr stage 3
-3in down pipe back
-walbro pump
-TID

 

I can't say I know the real answer since I don't have those items. But if it were me in that situation...I'd buy a SAFC and a Wideband 02 sensor/meter. One thing I'm fairly sure of is..the stock ECU runs the stock fuel very rich, especially over three grand. I've only seen this on the two turbo cars and one non turbo car that I have and am assuming the rest of the fleet are the same.