[FIXED]Fuel Economy Testing leads to worse Fuel Milage?

[Tridon]

I see that the Performance Testing slider affects the weight and fuel mileage in the same way the Fuel Economy Testing slider does, however I can neither see any changes to performance stats like rpm/torque/top speed, nor see that it affects the stars in the lower right corner of the screen. I'm just posting this here, since I would guess it's related.