Gearchanges...

[Muncher]

In theory, should I be changing up at maximum torque or maximum bhp?

[craigw]

when your ears are bleeding press the left pedal and move the long stick forwards or backwards as appropriate.

[iaint]

Shouldn't you be changing up to maximise your time in the torque band? i.e. don't change up if it'll drop you out of the power/torque.

Maybe choose the area that will keep you within 20% of max power and change appropriately?

Torque accelerates and power gives VMAX so when you're in 5th you can only keep going!

[G Man]

When the values are bouncing ----- shift and make it fast

[anniesdad]

I'd be changing up at maximum bhp - 5500rpm.

[pdV6]

Your torque curve's looking pretty flat between 4-5k, so I'd be tempted to run up to 5ish and then change, assuming the ratios then keep you at 4k+.

Experiment on the day, I would.

[trackdemon]

Change up at max power - if geared correctly this should drop you back to around peak torque.