They howl even with the air dam?
The Front Runner air dam? If so, I don't know, never installed it. It obstructed 80% of the sunroof. Generally, the south africans engineer great products, but they missed the mark on vehicles with sunroofs...
Thus the jerry-rigged option I came up with below. This one is on my UZJ100. You can see similar on my grey FZJ80 posted in my Garage.


