I installed superchips bluefin today. Im pretty happy with the outcome. Higher gears have a lot more pull and its very smooth. I had a bit of trouble getting it installed and managed to immobilise my car! The "switch on ignition" command was as clear as i thought. For anyone getting bluefin you need to insert the key/fob and hold down the start button for 5 seconds. It didnt say anything about holding the start button. Anyway this was just a thread to say i recommend it and its on offer, 20% off till the end of the month.