Quote:
Originally Posted by ILikeItSideways
I've read the STi wing really begins to have an effect anywhere above 80...
The tail end might just feel a little bit more squirrely at speeds of 100+
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This is correct. If you're not running high speeds, then don't worry about it, if you do, then DO NOT take it off. If you ever hit 120-150, believe me it makes a HUGE difference. I think on the STI you get about 60lbs downforce at 100 MPH. On the Supra you get 99lbs at 100MPH. This increases as speed increases.
Sooo, it all comes down to HIGH SPEED stability, if you want to be more stable at high speeds, keep it. Otherwise, if shouldn't make a difference.