Dose anyone know much about these fitted one in my car on saturday all soldered in nicely new earth ran into the car for it. Set it all up started the car all seemed fine but then on the drive home it went up too 14ish then froze there and wouldent do anything and the led was flashing so i pulled over and started again but this time it was stuck on 7.2 with no led? Had a good look at it this morning checked all the wireing again linked it too my laptop all looked ok did a free air calibration again and it was reading about 22 in free air so all fine there put the sensor back in the down pipe started it up all looked ok was reading around 13ish pulled off the drive and i dident even get out the close and it stuck on 8.4 no led?. Looking on there fault codes no led means no power but the gauge is reading so it must have power!.Now i know lots of people say these are shit and a waste of money but there is just as many who say they are really good so there must be a reason why its not working