E30 Start Problems

[Saul325is]

When I start my car in the morning(after being left overnight) the idle fluctuates up and down for about 20 seconds. Does anyone know whats causing this? This all of a sudden started when I swapped in the M30AFM, btw Im running mustang injectors too.

Thanks,
Saul

[Jordan]

If I had to guess, I would point the finger at the m30 AFM or the Mustang injectors. Just a guess...