Some pics to shook head to, I refuse to use very much time to this vehicle as it is daily ride and also as it is probably not going to live very long because of underside rust issues, so I make rough work without taking measurements etc. Despite I work slower than a snail there has not been many hours put to car.
Front airdam is something I plan to make from sheetmetal, currently it is made from trashes which did run out so it is not going enough near tires at the moment. If there is any luck, tomorrow I might get front air dam made and upper grille block too, just can't block whole upper grille as there is intercooler air pickup from upper holes, so that is bit limiting factor, IC sits at top of engine, which also causes engine to get cooling air stream from above that is not very good thing as temps drop at downhill despite there is quite bit of blocking already, engine just does not produce enough heat while idling and downhills can take several minutes to coast down.
I will also attempt to make front wheel skirts, only partials, to reduce that gap at top of wheel, not so sure that it will handle winter with all those mods, without mods there are already issues with snow packing to rear wheel arches, during 300km trip it was a must to stop 4 times to clean up rear wheel wells as tires had no space to move anymore. Might be really horrible with skirts on, but I don't plan to do long trips at winter.
Sideskirts and rear bottom belly pan would be great improvements along with wheel mini boattails, but not so sure I can make those happen. Especially rear tires have horrible aero around them, behind them there is large openings, whole bumper is hollow from that rear section and car bottom is at level of turnk lid bottom, if I would have proper bellypan there, it might help a lot to have clean flow there and Kamm would perhaps work even better.
With current mods 10kph more speed at coasting down hills on dry weather, 5kph at wet weather (we have had mostly wet weather for many months now).
It might be even better as I have now poor rolling tires at rear, have had two blowouts so had to use free backup tires and those are like brakes.
Painting is not yet complete, I think I will not paint it against winter, at spring paint has more chances to harden before getting harsh conditions.
Driving is actually bit more challenging now, at level road it goes with very little throttle, but when uphill comes I have to push clearly much more, probably level road throttle percentage is just less so there is now larger percentage of change for uphills.
Around 0.1bar less boost at level roads and lot more places where I can glide.
Farmers bring mud to roads, so car is constantly dirty, no point washing until roads will get cleared by rain and farmers get their jobs done so they don't bring constantly new mud, but maybe it servers as telltale of aero working or not working.