21st Mar 13 Hi Andrew, what can I say but WOW! what a transformation your red power box has made to my 2012 Astra cdti 2.0 I got the box within a few days and installed it as per instructions which was easy to do, left it on the no:7 setting as it came and went for a test drive. I noticed an improvment straight away, but thought it could be better. So after a phone call to yourselves before I touched anything, adjusted it to the A setting. The car is now BALISTIC! neck snapping acceleration and I am getting 10 mpg on average more than standard! Well pleased is an understatement, can’t wait for my next drive to work! Thanks. Regards Mike