After installing my whipple 3.4 My steering modes are not working. It says that it's selecting between sport, normal, and comfort. There is no change in steering response. It stays very stiff almost like it's on sport mode all the time.
If you can select the modes, but nothing happens, could be an indicator that the main power to the EPAS is cut. Easiest things to do, before bringing it to the dealer, is to check the 100A fuse at the battery terminal. If it is OK, then look for the 2 gauge connector at the EPAS, if it is connected correctly. If both are fine, then i guess, you really need a trip to the dealer.