Originally Posted by theDreamer

It might be more than just tuning with so many having issues, also my setup is a SC so slightly different variables but I know many with the GTM SC had this issue early on and a good tune resolved most. This is what I was told awhile back on why mine is probably acting funny (idle drops then throws lean code): I have found that by tuning the MAF sensor before adjusting the fuel comp table keeps thing acting alittle more closer to stock since the ECU looks at the fuel table last and uses the MAF sensor first.

/OT
Temps are still the same, sitting in bumper to bumper traffic in 100 degree temps can push it up, but the moment I start moving (faster the 30mph) the temps quickly drop back down to normal. General cruising around town though I see 205 water temps and usually 5 degrees above ambient intake temp.
/End OT