Hi, I purchased a gti mk5 and on the back it had a 'wald' sticker, i then found out its got 250bhp, i wanted to find out if these needed maintaining or ajusting from time to time, there isn't much on it online, have had the car for 6 months, sometime is feels like the rev meter just goes up high without showing any power and other times its okay.... can anyone shed some light on what i need to do to the wald, if anything.....
