I'm chasing an idle problem. The car idled fine before the last round of modifications. Then I added long tube headers, camshafts, and upgraded the fuel system to dual FPDMs and dual GT pumps. Since then the car has never idle quite right. (Driving is fine and it makes good power) The idle will drop below 500 and pop back up to the correct idle. Sometimes it will stall if I don't catch it with the throttle. I've band aided it by pulling timing and dialing in the dashpot trims, but it just isn't right. I'm thinking it has to do with one of the three changes above. I'm thinking that if anyone had the problems I'm having with headers or camshafts, they'd stop installing them, so I'm guessing fuel. I've modified the Fuel Pump Voltage table by data logging the corrected values from the ECU, but it didn't seem to help. What other tune related changes need to be made for the Dual FPDM/Dual pump setup? Does anyone have a Fuel Pump Voltage table they would like to share?