:agree: Do not use a hand programer (aka Diablo Predator) instead get a good tune by someone who is capable at maximizing the
performace of your car with the new parts (intake, stat, exhaust etc).
I had a hand held tuner some time ago and they are very basic for adjusting the fans, basic timing, error codes etc. but are nothing
like a good dyno tune.
You should call Manny @ ECP a supporting member here and he will forward you to the John who does many of the tunes on the cars here.
As for the stat you can go with a 160deg Hypertech unit as they are cheap and will help a bit in the hotter weather with the
adjustment of the 1st and 2nd fans kickin temperature settings. As Tony said go for a good intake (Callaway or Vararam), 160deg stat
and a good tune and you will be very happy for now and should cost you around $1000.