Hi Andrew82, welcome to the club. No you do not need to delete anything to run Malone Stage 2. I actually just got Malone's stage 2 tune and DSG tune on my 2010 Golf. I waited about a year after the fix and in that time my dpf cracked and intake manifold threw a code so I got those replaced on VW's dime with the extended emissions warranty then I got the tune. Malone's stage 2 tune will bring back the fun to your car. You may see a slight MPG improvement if you keep your foot out of it. 178k miles on my Golf.