VW Lupo 3L -->2L | Facebook
Today drived the car to the x-treme tuning show. I was able to see 2 liters @ 85 km/h speed behind a truck. That time I didint have any smooth hubcaps in place and only other rear fender skirt was in place.
No problems with heat, with 100mm cooling hole fully open. @ 120 km/h the intake temperatures were about 60 celsius and water did not rice even to 80 celsius. I might need some engine insulation like you suggested.
I try to upload also a video, but its uncertain that it will come through...