[QUOTE=ricky1750;4667469]Having an E-Q2 on the Spider and a Q2 on the GTA i can say the E-Q2 is indeed rather efficient, and is not a simple traction control.. The Q2 is MUCH smoother in it's action, it may be also be more efficient, they seem to behave quite similar, but the Spider has to handle 50 bhp less.. also the E-Q2 tends to "pull" you inside the corner, while the Q2 is much smoother in keeping you just right in line..
I think though that not all the 159 have the EQ-2 in place.. E-Q2 has been introduced since MY2008, so on earlier cars you have no electronic diff.. just the VDC and ASR traction control.[/QUOTE
I see. Mine's a 2007. Wheel spin city!