You buy say 100 credits and if you use a 10 credit app it drops each time you use one. SO if you do something and it DOESNT work it is another 10 to...
There is a difference between a hub centric spacer and a wheel spacer though. One fills in around the stub to enlarge it to fit the wheel centrally....
Cant you set the pressure reading in that wheel right down low and then save the settings so that it doesnt show up. Cant remember OBD having module...