Originally posted by InitialD
I tried cutting slotted holes in the Mazda 6 rear wing as indicated in the cutouts on the rear wing itself. It gave less rear down force of course and did make the car a little taily but I actually cannot conclusively give a summary on handling as I did not have much time with it until that rear wing self destructed ! 
It takes a lot of time just to cut those slots in the rear wing.
Well, it does look fiddly to cut and if you say it wasn't that conclusive then it maybe isn't that useful to cut.
