- 1,591
- Under the Hood
While I think it will eventually be fixed, as of now in GT6 you don't know for sure at what RPM you make your peak power at, critical information that is crucial when making shift points. Guesstimation can only take you so far, so here is a scientific way of calculating your peak power.
Requirements:
- Something to write on
- Ruler
- Calculator
Step 1: Go to your settings menu. Measure the length of your powerband:
For me it was 19.5 CM (We'll call this 'A'). Write this down.
Step 2: Now pick a place on the graph where you want to know what RPM it produces those HP/TQ numbers (usually peak power). Measure the distance to that spot.
For me this was 16.5 CM. Write this down (We'll call this 'B'). Also note the max RPM, for me this was 7,800 RPM. Write this down also (We'll call this 'C').
Step 3: Now comes the math, bear with me
1) Take B (Length to certain spot on graph) and multiply it by C (Total RPM).
2) Take that value and divide it be A (Length of total power graph) which will yield the RPM at the spot you measured to, which for me was 6600RPM
Seems like a long process but with a calculator you could do this in under 20 seconds, and invaluable when it comes to tuning 👍
Requirements:
- Something to write on
- Ruler
- Calculator
Step 1: Go to your settings menu. Measure the length of your powerband:

For me it was 19.5 CM (We'll call this 'A'). Write this down.
Step 2: Now pick a place on the graph where you want to know what RPM it produces those HP/TQ numbers (usually peak power). Measure the distance to that spot.

For me this was 16.5 CM. Write this down (We'll call this 'B'). Also note the max RPM, for me this was 7,800 RPM. Write this down also (We'll call this 'C').
Step 3: Now comes the math, bear with me
1) Take B (Length to certain spot on graph) and multiply it by C (Total RPM).
2) Take that value and divide it be A (Length of total power graph) which will yield the RPM at the spot you measured to, which for me was 6600RPM
Seems like a long process but with a calculator you could do this in under 20 seconds, and invaluable when it comes to tuning 👍