I swapped a TBI onto my 350 small block earlier this year. All went well and the engine runs great when warmed up. When I first start it in the morning it has a slight miss and when you "blip" the throttle it has a flat spot. Now if I simply drive away right after the start it runs good. The miss and flat spot are only when I "blip" the throttle. Once warmed up it runs fantastic.
My fuel pressure is 12.5 PSI, base timing I have played with from 0 to 10 degrees. I have it set at 8. All sensors are normal and in specs using winaldl.
I am using the 747 ECM if that helps.