Got mine today.
But I dunno, I must be getting old, I didn't rush to install it.
With snow on the ground and narrow snow tires, the extra power is just going to net more flashing of the traction light. So I am going to wait a couple of days till it's in the mid 40's.
'98 Dinan/RMS stage 2+(VAC cams, CES Cutring etc)
'11 Saab 9-3 XWD tuned(wife)
'06 Saab 9-5 Combi 5mt tuned(Aero interior/Konis etc)