Yeah get that tensioner checked out first. I'll just copy and paste what I said from another thread.
First step: Verify that the tensioner has been updated (Google how to DIY check it). If it has been updated check your timing chain stretch with VagCom or OBD11. If it has not been replaced start saving money before doing anything. Of course oil and other fluids if mileage is unknown on when they were done.
Second step: Start preparing for your tune.
- OEM R8 Red top coil packs with NGK plugs.
- Either replace the PCV with the updated one or replace the inside diaphragm with a beefier one.
- GFB DV+ or people say if you have the latest revision DV you don't need it. I run one, it's great.
- Tires. That extra power won't make it to the pavement unless you get some summer tires or good all season.
- Delete the resonator for a cheap way to make it sound better.
- Motor mounts, pendulum mount and insert to contain that torque beast after you flash it. I added these after tuning but at your mileage I'd consider doing them sooner.
Third step: Flash dat shizz stage 1 and enjoy the extra HP and torque.
Forth step: Get a CAI and down pipe as you save money. These are great things to buy used to save some money.
Fifth step: Flash stage 2.
Or skip the 3rd step and go stage 2. I was stage 1 for about a year before going stage 2. Now I'm working on K04.
Oh and are you DSG or manual? If manual you will need a clutch shortly after going stage 1 so save for that too!!! If DSG they say a tune is nice to have along with an engine tune but I don't think it's needed.