Audi A5 Tuning
"Making the A5 go as well as it looks"
The A5 is arguably one of the best looking cars to come from Audi in recent times and was launched in 2007. The last coupe made by Audi was the 80 so it's nice to see another sporty coupe released.
It is a very sporty looking coupe with some beautiful sweeping lines. The interior is as impressive as the exterior in an Audi kind of way.
Rear leg room is rather cramped though for a car of this size but that is not a priority for your typical A5 purchaser.
There is a lot of boot space and the car looks stunning.
We got to drive the A5 2.0 TFSI 220bhp Auto Quattro and was impressed by the handling and performance showing just what this car is capable of in the right tuners hands.
A simple remap would have given us another 50bhp or so without any other mods being needed!
An S5 Cabriolet was announced in 2009 with a stunning RS5 scheduled for a 2010 launch. This means that A5 owners can choose to use the S5 and RS5 performance parts on their cars as upgrades.
To improve the handling you could drop the car by no more than 35mm and fit stiffer dampers much like the Sline package Audi offer. Dropping lower that this will need other modifications in most instances and the standard A5 setup is pretty good so you'll just compromise a great car.
If you want to make your A5 into the supercar it should be follow our tuning tips.
Your engine choices are much along the A4 line with the 1.8 and 2.0 TFSi. There is also an interesting choice of V6 TDI's and 2.0 TDi and 4.2 V8 Fsi and 3.2 V6 FSi to choose from. All models have the 6 speed box and there is also the Tiptronic auto available which is highly recommended.
The best power gains usually come from larger engine sizes but we cannot dismiss the relative ease of remapping the Turbo models and power gains on offer.
Diesels reward the tuner with ridiculous levels of extra Torque and better economy (especially the CR engines). The more you start with the bigger the return on investment so engine swaps are good value mods if you have the 1.8 TFsi and want to drop in a 2.0 TFSi block.
Audi A5 Tuning modifications.
Your aim when tuning should be a nice flat torque curve and a wide power band. We would strongly recommend that you start with a Turbo engine, even the Diesel has lots of potential.
Audi A5 Intake and Exhaust Tuning.
The next area for modification is the intake and exhaust. Derestricting the airflow into the engine is the primary part of tuning so get a better flowing air filter.
Induction kits sound great but due to the warm air in the engine bay they will not add noticeable power and actually rob you of power.
Sports exhausts balance the flow of air throughout the engine. But if your exhaust is too large, you will lose a lot of the flow rate and lose power on most engines.
DPF filters are a pain but removal is illegal now in a growing number of countries. The 140 TDI engines without the DPF are in our opinion better when remapped with a larger turbo than the 170's and give far fewer headaches.
Gas flowing the head will allow you to maximize your air/fuel charge. TorqueCars suggest you leave this to a professional though, with a proper flow bench and machine tools When you start tuning your A5 you will find that the standard clutch starts to complain at around 300bhp so get an uprated clutch if this applies to you.
NASP engines do not achieve big power gains if you remap them, unless you have done extensive modifications like cams and head work.
With turbocharged engines (including the diesel) this is another story. A remapped turbo will give phenomenal power gains and take full advantage of the strength of the block. We have seen power gains of over 50bhp on the A5 from a remap and the standard V6 diesel block can be pushed to around 300bhp without issues.
The diesels will offer up a further 30 - 50 BHP with a remap and still offer loads of Torque and retain a lot of the economy you bought it for!
Larger gains are around if you go with a big turbo conversion. TorqueCars recommend a ball bearing based turbo and if you just want a simple drop in replacement then hybrid turbos are your best option.
Audi A5 Wheel modifications.
It is worth noting that although they can look cool on the A5 big alloys will actually decrease your performance. Firstly they increase your unsprung weight. Also you need to look at the gearing.
The larger you go the lower you top speed will be due to the change in your effective final drive ratio.
Although some people have gone larger we would stick to a lighter 18 inch rim size as the maximum but the 19's do look very nice and will work ok.
For more information on Tuning your car please join us in our friendly forum where you can discuss A5 options in more detail with our A5 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 have outlined in this article.
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