It's normal.. Our cars have rough idling.. I bought my car with the performance package an I loved it until I got spanked by my cousin and his jb4..so I got it myself.. It's nice cause when I'm alone driving spiritually I'm on map 1, and when the wife is in the car I'm on map 0 which is with the ppk..I don't know what stock feels like but I'm sure it's a better upgrade either way.. When I went from ppk and map1, there's minor increase in hp.. Map 2 is much more aggressive. anything is better than 300hp stock to the crank..
2011 BSM E90 335 xdrive, msport,performance package,nav,premium,cold weather,ets cp,bms intake,custom exhaust,jb4 stage 2
R.I.P. 09 BSM E90 335 xdrive =*(