I bought the LM today and was curious as to how to tune it up as well. Essentially I took the 9R tune and tweaked it a bit based on my personal prefs. My PS3 is off ATM so can't give you details but basically I did little tweaks to camber, ride height, springs, diff, aero and trans settings (yay for adjustable gearing). I am still getting used to my wheel but still got PB times.
I know this doesn't help a great deal but gives u an idea on just how easy it can be to tune a car yourself.
P.S. Hi all, I have been viewing for ages, finally registered!