Overhead mpg going crazy

[Eray]

Changed my rear brakes and did front wheel bearings as they were shot there was no abs sensor at all and now my mpg overhead is at 99.9 when i start it iv reset it and does the same but remembered i pulled out a sirius radio that was under the dash but wires have no power so cant be that is it just computer or anyone have any ideas im clueless it climbs when im sitting at a light to no check engine light and hell wanna say my odometer went down to whats going on???

 

[kevkev]

Should at least be a sensor on the front drivers side. I thought mine was screwing up, Im only getting 13.5 mpg