McLaren Mp4-12C tuning box.
This was installed on my 2014 Mp4-12c
It’s a plug and play and took me and couple of my buddies about an hour to install, im including the link with instructions, the version I have has no necessity to be hooked up to a power source so its just plugs that are going inline with existent very easy without need of sending ECU out for modifications and if you want to return to stock you just unplug the main plug off the module and plug the provided BNZ into the terminal very easy
The tuner has 3 programs with 3 settings each for a total of 9 difference performances
It adds lots of power and the performance is great to include throttle response and I really enjoyed it
The reason for selling it is that Im trading car in and putting everything back to stock
Shipping and handling $25