I recently installed a return fuel system in my 07 gt500 so i could run E85. After I got the car running i was checking parameters on my Aeroforce gauge and the FPDC would hover around 29-30% at idle. I assume this means that the car is usnig 60% pump capacity at idle which seemed way high for twin 465lph pumps. The FPDC will go up to 100% duty cycle when getting on it a bit. Both pumps are running so i dont think I have a bad pump.... Is the PCM going to correctly read FPDC when the pumps are being triggered @ key on with relays from my Lethal wiring kit? How is FPDC calculated? I need a bit of insight on this.... im not sure if i have a problem or not:bash: THANKS