Hi guys. I'm new to the forum having just brought my first Alfa, a little 147 I've had it five days and the mcsf has come on. The guy that I got it from has put a nasty cone filter on it straight to the maf sensor without a cold feed and it's definitely not been cleaned since its been fitted. I took it off today and cleaned it out and the warning went away.....it's back! Do you think I should change the maf sensor or could it be something else? Many thanks in advance.