Aside from the physical difference of the inlet size at the rubber�boot end, are 
there any real differences between these two items? If both complete sets 
(airbox, boot, etc.)�were available, would a 2.1 AFM�work with a 1.9 ECU? Just 
wondering, cuz I will be putting my 2.2 (up from 2.1)�rebuild into a 1.9 
chassis...