Star Xentry enabling collect
cluster mods include
temp on display
lowering - airmatic only
star needs all the multiplexors etc to speak to your car - easiest way is to visit an indie.
anything can be added, not cheaply tho!
Auto folding mirrors (if electrically folding)
Tyre pressure loss warning
Fuel tank content display
Outside temperature disply in the status line
UK mode deletion (enables MPH in status display)
Navigation display in instrument cluster
Telephone/ipod buttons enable and display in instrument cluster
mainly with retrofits (rain sensor, electrically folding mirrors, NTG2.5 and more recently diagnosing auto transmission fault).