you don't need an uprated fuel pump for stage 2, just exhaust and intake. There is stage 2+ map for fuel pump, intake and exhaust 
Thanks for that. Its just that I read the following on the Revo site and wondered about the 4-bar fuel pressure regulator...
Stage 2 software produces 10-15% for power when used with:
An aftermarket performance exhaust system
A 4 bar fuel pressure regulator
An optional aftermarket diverter valve
And a Revo SPS