I just wanted to let you know that I drive a Jeep Cherokee 3.7l and my petrol consumption was between 15.50 – 16.00 litres per 100km. I had the Turbo Flo device fitted about two months ago and my petrol consumption dropped immediately to 12.8 – 13.50 litres per 100km. I have an onboard computer in my car and the petrol consumption is shown on the screen so I know that the results are really accurate. I have also found that my vehicle has more power as well so that is an added bonus! I am very happy with your product and it was money well spent and I highly recommend it.