It looks like the wings have come a long way from this...

 

The VG draws faster air from outside of the boundry layer to the skin of the vehicle, which re-energizes the boundry layer, helping it to stay in contact with the vehicle and continuing laminar flow. This is what increases the airflow across the trunk of the vehicle, increasing the effectiveness of the wing. Without the VG, the boundry layer will break away from the laminar flow of the roof at the peak between the roof and rear winshield and create a low pressure region of air (and creates turbulent airflow between the rear windshield and the wing). This low pressure increases drag.

 

that ***** in anorexic, maybe going 160+ puts more than 115lbs of force on the spoiler lol.

 

I believe the fastest i've gone is 130 for my first track day. I've never noticed anything but i hope that I don't have this happen as well.

Might have to get an VIII like ppl have suggested.

 

i have done 140 with some noticeable wing flex but no failure yet. (not on street (for mods))

 

I too have touched 140 mph before... not that I was paying super-close attention, but I didn't notice anything. (This was on my previous Evo IX.)

The STI wing, on the other hand...

 

idk whats going on with these wings it seems to be hit or miss lol. if i would guess it was bending like if u were pushing a bit on the middle.

 

i'm actually a little bit annoyed now, because when i brought it in to the dealer way back they said it was vandalism (someone like pushing down on the wing or something) and wouldn't replace it

 

My wing also split on the leading edge just about dead center, '06 evo9, now as soon as I hit 90ish it starts flapping so I've been taking it easy until I find another one in GG

 

^ Someone on Socalevo.net is selling a GG IX wing with the gurney flap

 

I have a perfect GG IX MR wing with the flap if you're interested

 

120 mph no problem for me.

 

The 9 wing was made thinner than the 8"s wing so stability is not as good. Your okay up to 155-160. After that, the downforce created on the 9 wing is very strong and can/will crack the wing. It gets even worse if you have the lip which adds even more downforce. If your gonna go above 160 get an 8 wing.

 

^ Luckily for us, Evos top out at around that speed anyway... and very rarely do the cars ever see that speed.

 

Its still doable!