Johnny Utah

Yes they are all brand new cars and I haven't tampered with them at all, so if they come with suppresors attached, then they will still be attached.

Thanks for info. guess I'll learn to live with it. Be good to hear from others if this is just how it is

I have purchased an arc air powerbase all seems to be working, but the as soon as there is power to the track the cars emit a high pitched whining sound. I have 5 cars and they all do this. This occurs when the accelerator is pressed and also when calibrating the cars in the arc android app and increasing the power. When I swap out the arc air powerbase for the one in the continental sports cars set this doesn't happen. When the cars are racing it is less noticable due to the noise of the cars whizzing round the track, but it is very irritating and am thinking of sending it back. I shall contact customer services on Monday, but was wondering if anyone else is experiencing this? Thanks, John