I continued to have some CEL issues. The codes had been deleted through the use of an OBDII analyzer (which doesn't have the Maserati specific codes) and a battery turn-off, so I could only give the dealer the code numbers from the OBDII. They couldn't find the source of the problem They suggested I get the car to them as soon as posisble after the CEL came on the next time, which I did. They retrieved P1180, a different code than the OBDII had retreived earlier. This could be completely unrelated to the earlier codes or possiibly the OBDII readings were wrong, I simply don't know. However as a result of the dealer's scan, they replaced the "air flow meter", part 180045. The change is amazing to me. The throttle response and smoothness are substantially improved (previoiusly some stumble and needed to put my foot into it).
The moral of the story, for me, is that sometimes the CEL is meaningless or insignificant (even the dealer commented that CEL could be related to gas cap) but sometimes there is something more and you might need the assistance of the shop.
04 Spyder GT - 11323 - SOLD
86 Ferrari 328 GTS blu sera