[rotrex]

Hi,
it means with the current w/m flow the engine starts knocking before I reach the maximum torque as I advance ignition.
If I would up the flow, I would at some point not be knock limited anymore.
As I would advance ignition triming any further, torque would just drop as peak pressure is reached to early. But there would be no knock.

Thing is that I only use a 3l tank. On a track with lots of WOT, e.g. Spa, it only lasts some 15 to 20 minutes. On tighter tracks, e.g. Anneau du Rhin or Bilster Berg 3l last for more than 30 minutes. I am usually not for longer on track within one session anyhow.

On the road it may well last 200 miles excluding longer 130mph+ streches of Autobahn driving.