[QUOTE=thecman26;8144679]I tried one on my HB D4 and I couldn't tell a difference! Plus they weigh a bit more than a stock wing so maybe that could help, more weight over the rear tires!
Would you really want to be adding weight to the very back of the car at the highest point....? Does not seem logical to me...
Wings are not expensive...put a new one on as you need it makes a big difference having a good wing on...