Upgrade parts for your Audi A3
We can help you choose parts that suit your engine, your power target and how you use the car.
Water / Methanol Injection
Help reduce intake temperatures and engine knock on suitable performance builds.
Explore upgrade
Nitrous Oxide (NOS) Injection
Add power when activated, with the right fuel supply, controls and engine setup.
Explore upgrade
Exhaust Systems
Explore Milltek and other leading exhaust brands, with fitting at Llandow Tuning.
Explore upgrade
Ignition Upgrades
Choose suitable spark plugs and ignition coils for reliable performance as power increases.
Explore upgrade
Turbo & Supercharger Conversions
Find out what is involved in adding a turbo or supercharger to your engine.
Explore upgrade
Before you buy parts
Tell us what is already fitted and how much power you are aiming for. We can advise on suitable parts, fitting and tuning.
Selected: Audi A3 8L · 1.8 20v 123HP Petrol