Like @
Malt, I am running the FT86SF/Hancha group street splitter and the @
Wonderbar V1 diffuser. I think it's a great combo. I haven't been out on a track, but on twisty backroads it is pretty noticeable. I feel the car is still very balanced, and that the limits of understeer and oversteer are both higher than before mods. Most notably, the car feels more stable and planted. Being on public roads, and being an amateur, I don't push overly hard. That being said, I've only been able to induce understeer once and have yet to be able to power oversteer since adding these products. I was able to induce these conditions at will prior to these products, at stock power levels on 30k mile Primacy's.