Starting and below 2000 RPM

Hi everyone,

i’m new here, and i see a lot of people have the same problems as me!

I just had a MSD ignition put in my car and now i doean’t start nice. When i start it, it almost sounds like the motor is being flooded? And below 2000RPM it really hesitates! It seems evryone has this problem, does anyone have a definate answer?
thanx

TTT