Overheating slightly on highway ONLY

[1990TSIAWDTALON]

Put a lower air dam on. Ducting is great, no doubt. My airdam helps tremendously, mounted right under the radiator support.
Just another idea.
You can see it in my profile picture BTW.

 

[miliman13]

Put a lower air dam on. Ducting is great, no doubt. My airdam helps tremendously, mounted right under the radiator support.
Just another idea.
You can see it in my profile picture BTW.

this didn't work for me.