I did a supercharger on a 2000 model S , also a AEM stand alone computer system.
He brought it back 4 years later with a herd starting problem. It cranks ok, but seems like no fuel is going into the intake after the car sits for a long while, ( overnight )
If you spray some carb cleaner in th eintake it fires right up.

Some information found points to the coolant sensor, but that ususally makes the car run rich.
Anybody have any ideas ? No engine light on.

Al

 

how is the tune?

what happens if the stock ecu is plugged in?

 

What fuel pump is he running? Stock injectors?

Might want to post in the Forced Induction forum...someone there may have seen something similar.

 

AEM EMS is notorious for difficult cold starts if not tuned and retuned... especially with weather temperature changes. Sounds like the "enrichment table" needs a little more fuel. Happens to us every time it gets colder. I would have done KPro if it was available at the time.