A really good job done Bernie, meant to get in touch, Dave with the 3ltr diesel BMW said his return journey home was so much smoother and just had its mot. The emissions as stated by the tester were as good as if the car was new. Sue’s diesel mini did smoke for the first few miles as you said, but says the car accelerates better and is returning better mpg. My TT diesel is certainly quicker and I’m getting just under 60mpg on a run, better than previous. Great job. Have recommended you to a few close friends who may get in touch. Thanks again Bernie.