Welcome fellow 'Teg driver.
BTW, do you have an automatic? I leveled-off at 31 for quite a while and ended up relying on both mods and technique.
I've found that the engine operation is most efficient when hot -- intake air, coolant, engine block heater, etc. Use the torque to get up to speed and monitor that ScanGauge (if you have one -- if not, get one!).
Any pics? Update the Garage and Gaslogs when you have the chance. Best FE to ya...
RH77