EcoOBD2 USB Scanner Fuel Saver Economy NitroOBD2 Diesel Car Chip Tuning Box for Benzine 15% Fuel Save Plug&Drive Lower Fuel and Lower

Increase mpg a little but help with fuel price s

Not sure if it does save fuel, appears to be the same MPG

I used this product for a couple of weeks I found out it takes the edge off the pickup , plenty to overtake safely , I Disconnected it to see the difference I noticed the car wheel spinning a lot and I was watching the Disel needle going down very quickly so reinstalled it to save money ,

Very good

Complete fake do not buy this product, it a scam!........

Decided not to use it after some research on line . Not worth the £7 I paid to risk my engine . Too cheap too easy too good to be true !!!

This product does not work! The only thing that works in the unit is the light. The unit does not have any effect on the cars ecu and cannot possibly rewrite the electronics to change the fuelling parameters. As a motor engineer I had guessed that would not work but ! One learns.I have since had a reader installed into the car and there has not been any changes to the fueling principle….waste of money

The car tells me that it is now doing 51.5mpg