Re: 2011 Overland w/ Mods - Do I need a calibration?
V8 I assume?
The new ECUs just adjust (continuously) to your mods and bring performance and emissions pretty much back to stock. There is a placebo effect, you will see many reports from those that use butt dynos... (or salesmen) and there is nothing wrong for doing these mods for sound.. waste of $$ for any kind of performance.
Check out the Diablo threads for a tuning device that can modify the ECU programing. Not a whole lot you can do about shift smoothness, but I think you can adjust the shift points.
Mine runs pretty good when I put in sport mode, keep the transmission in 5 and driven with some spirit, feels like a different car than when simply driving normal and D... The ECU does adjust a bit to your driving style. Those that drive like you stole it will seem to have better performance.
2011 WK2 Overland Mineral Gray/Black, Advanced warning, V8; 2009 KK Rocky Mtn V6; 2000 WJ Laredo I6; 1979 CJ7 I6... green... miles of smiles :)