So I ended up messing around with the transient fueling several times. It is still in the 30s and very windy here, meaning the engine cools off very quickly which is rare. What better weather than to mess with the transient fueling. I have let it cool almost completely down to ambient 3 times. I think I have the transients at least to the point where it drives nicely now and has good response at all engine temperatures. In HP Tuners I ended up adding 25% to the whole Evaporation Boil Time table. I ended up bumping the whole Fuel Impact Table 50% at a time. So I went to 150% (still very lean but it stopped popping into the intake), then 200% (still somewhat lean to the point you could feel it hesitate but getting better), then finally 250% (might still be a shade lean but instant throttle response). I also increased the gain factor up to 1.00 up to 128 gms/sec airflow. I drove it with the coolant temps starting out at about 45*F. It was responsive to moderate throttle even cold and remained resposive as the engine temperature increased and it went into closed loop. I will probably leave it as it sits now and drive it a bit more to see if it stays happy. I may add a little more to the boil time table just to see how it reacts. If that does not provide the result I am looking for it might get another 25-50% added to the impact table. It is crazy to think that those values are now 2.5x what GM calibrated them for on the 350 then again, this 383 moves 2x the airflow and makes 2x the power and has alot more intake port surface area to keep coated with fuel. Its 100x better than what it was before though and probably better than it has been since this engine has been in it. I still have not been able to hit it WOT from a stop with a load on it as the 30-40% hit I made hazed the tires on the still damp road.