Bifferent gear box number.

[Fred Ngatia]

After a long search for answers to high consumption of my subaru GF2 with no sucess i came to realise that the car wa lagging to change Gear and that is how a mechanic realised that the two numbers were different. My Question is,

1)Do i need to change the gearbox or the car computer?

2) What effects does it have to the engine?

3) will it reduce high consumption after the changes.

I will highly appreciate your assistance Sub Team.