I 've had this car for 6 months. I tune all of my own cars and put in hours testing a tuning. But this one car i just can not get to work. The 2017 Porsche GT3 RSR. I 've tried everything with this car and nothing seems to work is still handles like dodo. I need help with this car. I run a lot is Road America and Mazda Laguna Secca. I m looking for a good handling tune for this car.