Edelbrock Pro Flo 4 EFI

Ivan Baez said
I set the idle timing to 18 and is much more responsive

Mine's at 17*. I lowered the all in rpm from 3000 to 2500 to quicken the curve, {36* total +8 vacuum advance} didn't help a bit. Added fuel, pulled fuel, still feel it sag part throttle when it shifts.