Yes you will still need a boost dependent fpr.Even though the 310's are larger then stock they are still close enough in size to the stock ones for the ecu to compensate for the larger injectors (the ecu will try leaning the engine out in an effort to not run to rich).Once your under boost thats when you need the fuel.Go with a 6:1 fmu and the holly 255lph pump (make sure it's the high pressure one designed for forced induction) thats what i have and it runs pretty good.