Smooth underside mk1 is almost ready. Tomorrow will get new ecu remap to this car so next efficiency tank will be under 3.5 liters if calculations are correct.
I dont need long and flat road to reach that 3 liter fuel consumption target. It should be a peace of cake actually. 2.75 l/100km is a harder goal but even that is possible at 100 km/h speed, why I know? because my calculations say so.
https://youtu.be/fCJzNvakPmA