I have recently been experiencing a pretty serious steering wheel shake on braking. Not sure yet whether it is an alignment issue, warped rotor or EPAS problem. As you can see from my signature my car has a number of mods. I want to take it in to the dealer to check it out and hopefully fix it under warranty. First question is whether my mods are likely to result in a warranty refusal even though they have nothing to do with the brakes or steering? Second is whether I should remove the engine mods and reflash back to the factory tune before taking it in? That would be a big pain and I don't know why they would be doing anything with the PCM but I am not sure.