Q. But does it really work?
Read what Auto express says here http://www.autoexpress.co.uk/car-news/consumer-news/59931/watchdog-engine-remapping
Read what Auto express says here http://www.autoexpress.co.uk/car-news/consumer-news/59931/watchdog-engine-remapping
The changes made to your car though almost undetectable are none the less changes, and as with all modifications you are obligated to inform your insurance company.