Accelerometer in 8G mode doesn't work correctly

When I use accelerometer in 8G mode (I switch 8G mode with function setOutputRange(1)) it looks like accelerometer in 2G mode, but output values are like multiplied by some constant. For example:

when the phone is at rest:

• output values in 2G mode are around 8,5
• output values in 8G mode are around 33,3