first things first get it linked up to vag com - this will tell you if its just an abs sensor that isn't working which it normally is so shouldn't be expensive you can buy them for about £12 and fit them yourself.
Airbag light will also come up with vag com, you can try just deleting the fault codes and seeing if it comes back - sometimes this works.
not much point revving an 8v past 5k anyway so i would just leave it..... (jokes!!!!)