Alfa-less and lost.
AO Silver Member
Join Date: Jan 2003
Location: United Kingdom
Re: Q2 Diff in GTV V6 (6 Speed)
Just noticed this question so copying my email to Alza
For me the Q2 is brilliant. It allows a better sprint in low gears as the diff automatically adjusts torque to the most grippy wheel, and better cornering and especially exit speed as you can put the power down earlier. In fact some people even claim better braking but I could not verify that.
I think the Q2 comes as an exchange unit so your mechanic will need to return your original diff to get a small amount of money back. I was charged £209.09 for the Q2 and 2x £23.10 for differential bearings. My specialist (Alfa Aid in Maidenhead) also charged one hour of extra labour for fitting as they were also doing the clutch (installed a lightweight clutch though I don't really notice much of a difference on this).
Hope this helps