Audi Q8 Tuning

"Thank you for reading my Audi Q8 tuning guide."

The Q8 is a flagship crossover SUV in Coupe style, and is in our opinion one of the best in class. It was certainly no slouch either with the least powerful  diesel engine still hitting 60mph in a shade over 7 seconds! The petrol engine cut this time to sub 6 seconds.

There were 2 3.0 litre engines on offer both were V8 configuration blocks. A petrol engine in the guise of the FSi with a modern twin scroll turbo. The Diesel engine came in two power levels, the 45TDI putting out 228bhp and the 50TDi which was tuned to 282bhp.

The diesels offer planet rotation halting levels of torque but a simple remap can yield massive power gains on these, completely transforming the Q8.

The Q8 is a good tuning project to do. We see DIY mechanics wasting money on their Q8 doing the wrong mods and then having to start over. Follow our hints to avoid ruining your car

Tuning tips and articles

Engine tuning Transmission tuning Care care Intake & exhaust mods Improve handling Forums

Turning our attention to the engine we need to get a bit more power out of the top end.

Enjoy your Q8 to the full with our great performance tuning advice - do the right mods in the right order.

Sadly with smaller engine sizes you are wasting your time spending money on modifications, so if this applies to you get yourself an engine swap then apply the following mods.

Engine Tuning.

These are the uprated modifications are usually fitted by our members, decide how far you wish to go in your tuning project before you begin.

Getting the best motorsport parts for your planned usage of the car is essential. Stage 3 motor sport parts just don't work well on the road difficult in stop start traffic.

Stage 1 mods: Lighter flywheel, Remap, Alloy wheels, Panel air filter, Suspension upgrade (drop 30-40mm), Sports exhaust.

Stage 2 mods: high flow fuel injector, Ported and polished head, fuel pump upgrades, Fast road cam, Power/Sport clutch.

Stage 3 mods: Adding or upgrading forced induction (turbo/supercharger), Engine balancing, Competition cam, Sports gearbox, Internal engine upgrades (pistons/head/valves).

Peak power is good on competition cars but for a daily driven car you need a wide torque band and perhaps extending the rev range. The Q8 is designed to sap up the long motorway miles with ease and your tuning should reflect this original intention.

The point of our tips is to give a limited introduction of customizing upgrades and point you in the right direction, our forum is best place to go if you need more detailed advice and tips on your car tuning project, the best uprated modifications and all aspects of modding cars.

Fast road cams offer one of the biggest performance gains for your money as far as a bolt on performance parts goes on a NASP engine but there are many profiles to choose from and we would caution you from getting an aggressive cam profile, these V6 engines are not particularly rev happy (compared to the smaller inline engines in the Audi lineup).

The intake and exhaust flow play a large part in your cars power band, but be careful here, getting this wrong can upset the idle and make the car difficult to drive in traffic. You'd need to follow a camshaft upgrade with other mods and finish with a performance chip for the best performance gains.

When pushing up the power you will need to ramp up to the fuelling. More power needs more fuel.

If you find you have flat spots and power surges after your uprated parts you should check the fuelling and try a higher octane fuel as well. Upgrading the injectors is another beneficial modification and will deliver sufficient fuel.

A fuel pump will only deliver a finite amount of fuel, so you may need to uprate this if your injectors are demanding more fuel.

Intake and Exhaust Tuning.

The next area for modification is the intake and exhaust. Please note that WE DO NOT RECOMMEND INDUCTION KITS, unless you have tuned your car extensively and are finding that the standard air intake has become a restriction.

The standard Q8 air box does a very respectable job and flows enough air to cover a 25% power hike easily.

Induction kits can work well on turbo engines and larger engines (if supplied with a suitable cold air feed or air box), generally though we'd just recommend for Q8 engines you should settle for a performance panel air filter preferably made from cotton.

Sports exhausts increase the flow of gases through the engine. But if the exhaust pipe is too large, ie: it's over 2.5 inches bore, you will lose much of your flow rate and end up sapping power and torque.

Getting the cylinder head gas flowed will assist in flowing more air into each cylinder. This is definitely a job for a pro with a flow bench.

When you tune up your Q8 you will discover that the standard clutch starts to complain so get an uprated clutch. Turbo engines are just asking to be Remapped.

You will see massive power gains on most modern turbo engined cars including diesels, and the mighty Q8 is no exception, making a remap one of the most cost effective and massive modifications for your money.

The most impressive power gains for NASP engines usually involve the addition of forced induction. Superchargers are often easier to add than a turbo. Turbos give boost in increasing proportion to increasing engine speed and this can make mapping difficult.

Superchargers however will give a boost which is directly proportional to engine speed so is simpler. Adding forced induction will usually require a lower compression ratio or water injection.

Alloy wheel upgrades.

Alloy wheels will help the brake cooling and are generally less heavy than the steel ones. If you are serious about performance then you will need to carefully choose your tyres - ideally with a soft compound tyre. Large Q8 alloy wheels can decrease performance. If you get big alloy wheels you will be changing your final drive ratio.

Although some people have with bigger wheels we would stick to an 18 inch rim size as the maximum. In TorqueCars opinion the larger wheels really compromise the handling of the Q8 and should be avoided.There is a more updated version of this Audi Q8 Tuning article on

For more information on Tuning your car please join us in our friendly forum where you can discuss Q8 options in more detail with our Q8 owners. It would also be worth reading our unbiased Audi tuning articles to get a full grasp of the benefits and drawbacks of each modification.

We need your help improving this article, so please send us your feedback in the comments box below and pass on any tips, points or facts we have wrong or have not covered.

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