How to edit engine horsepower, torque etc.?

I would like to try to make Volvo DH12E engine with 340 hp, but don`t know how. What I need to change in engine files. to make this:

DH12E 340 hp

Output ISO 1584 250 kW (340 hp)
at 30r/s (1800 r/m)
Torgue ISO 1585 1700Nm (173 kpm)
at 16-23 r/s (950-1400 r/m)

It is too powerful for SD200 and SD202, I know...

First thing's first, you need to find the torque curve for the engine, which can be readily obtained through Volvo.

Secondly, you need to edit the torque values of the particular bus variant you want to 'transplant' the engine into.

Thirdly, you will need to edit the transmission variables including gearshifting points and torque restriction to ensure realism with the engine.

Please note that the DH12E, while offering 250kW @ 1800rpm / 1700Nm @ 950-1450rpm in base form, is significantly torque restricted in city bus applications. In the B12BLE 4x2, the torque is generally reduced to 1200Nm.

poweredbycng schrieb:

First thing's first, you need to find the torque curve for the engine, which can be readily obtained through Volvo.

Secondly, you need to edit the torque values of the particular bus variant you want to 'transplant' the engine into.

Thirdly, you will need to edit the transmission variables including gearshifting points and torque restriction to ensure realism with the engine.

Please note that the DH12E, while offering 250kW @ 1800rpm / 1700Nm @ 950-1450rpm in base form, is significantly torque restricted in city bus applications. In the B12BLE 4x2, the torque is generally reduced to 1200Nm.

Okay, what are those lines I need to change. Some kind step by step instruction about basic things, would be good. I have already tried to edit files, but what I get was bus with almost no brakes. So...