Originally Posted by TUGvr4
Forgot to ask is the only difference in the series 1 and 2 -the 1=uses a m62 blower and 2= uses a m90 blower? other than that they the same?
There are alot more differences in other parts as well. The series 2 got refined some and some bolt patterns, opening positions, and other misc parts may have a slightly newer designs makeing them incompatable with the older series 1 engines. Series 1 is also OBD1 where as series 2 is OBD2. You are right though about the blowers.