JohnnyT, I'm running the MickeyD stage 1 tune on my 05 LGT. Been doing well for over a year now. Found it on the romraider forums per suggestions here, edited my maps to match it, and reflashed myself. Pretty easy if you take your time, and are handy with a computer.
Sent from my Samsung GS5 via Tapatalk. Please pardon any typos.