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Audi TT 1.8T
1.8T Engine Tuning Guides
Tuning Guides

Tuning guide for 1.8T 20V AMU, APX, BAM engines with 225 hp

With these power levels you can reach up to 666 hp!
by
Bartek Bartoszewicz
Tuning Professional

Up to 666 hp with your 1.8T 20V engine

With this tuning guide, you can increase the power of your 1.8T 20V engine step by step. Find out here what tuning parts you need and what’s really important for getting the max out of your engine safely and easily.

And for all those who find that not enough performance, we have put together another bundle for you. With stage 5 you get 666 hp!

 

Installed in:

  • Audi S3
  • Audi TT

Year of manufacture:

1998 – 2006

Engine Codes:

  • AMU
  • APX
  • BAM

The values ​​given are based on our experience with our Audi TT Ringtool project with the 1.8T APX with standard 225 hp.

You need this extra to make it last:

You don't need any additional components here. Simply install and have fun! No Longlife oil. Better use our GTX Racing Oil 10W-60.

BAR-TEK® TIP!

We recommend to fill up with 102 octane fuel. This will give your engine more power because it knocks less! The turbocharger should not be too old and the engine should be in good condition. The basis must be right. Check the red pressure hose on the turbocharger; it's often leaking because it can't stand the heat from the manifold. Our Forge silicone hose can help!

We recommend to fill up with 102 octane fuel. This will give your engine more power because it knocks less! The turbocharger should not be too old and the engine should be in good condition. The basis must be right. Check the red pressure hose on the turbocharger; it's often leaking because it can't stand the heat from the manifold. Our Forge silicone hose can help!

Product Bundle 1
Group 6
BAR-TEK® 1.8T AMU, APX & BAM Stage 1 - Bundle
Maximum performance for the small wallet
Perfect for the start
Top price-performance ratio
The engine software must also be adapted for every tuning!
Benzindruckregler einstellbar 1.8T; VR6; R32 BAR-TEK®
+
Pressure pipe
+
+
+
+
+
1.8T Turbosilikonschlauch 210/225 PS Forge FM225TH
+
1.8T Pipercross Luftfilter
+
Total
€968.15
incl. VAT

Immediately ready for shipment!

You need this extra to make it last:

For higher mileage, we recommend fitting a sports clutch so that the extra power can be put on the road.

BAR-TEK® TIP!

As with level 1, we recommend that you refuel with at least 102 octane fuel and replace the red pressure hose with the Forge silicone hose!

As with level 1, we recommend that you refuel with at least 102 octane fuel and replace the red pressure hose with the Forge silicone hose!

Product Bundle 2
Group 6
Group 6
BAR-TEK® 1.8T AMU, APX & BAM Stage 2 - Bundle
With intercooler
Perfect ignition
Next level tuning
The engine software must also be adapted for every tuning!
Benzindruckregler einstellbar 1.8T; VR6; R32 BAR-TEK®
+
Pressure pipe
+
+
+
+
+
1.8T Turbosilikonschlauch 210/225 PS Forge FM225TH
+
+
Sportkupplungs-Kit Sachs
+
+
+
Total
€3,013.41
incl. VAT

Immediately ready for shipment!

You need this extra to keep it long:

sports clutch kit is required so that the 310 PS can also reach the road. To keep the oil temperature in a healthy range, an oil cooler must be installed.

BAR-TEK® TIP!

As with Stage 1, we recommend to fill up with at least 102 octane fuel and replace the red pressure hose with the Forge hose!

As with Stage 1, we recommend to fill up with at least 102 octane fuel and replace the red pressure hose with the Forge hose!

Product Bundle 3
Group 6
Group 6
Group 6
BAR-TEK® 1.8T AMU, APX & BAM Stage 3 - Bundle
With forged pistons & con-rods
Ambitious tuning
More powerful turbo
The engine software must also be adapted for every tuning!
Benzindruckregler einstellbar 1.8T; VR6; R32 BAR-TEK®
+
Pressure pipe
+
+
+
+
+
1.8T Turbosilikonschlauch 210/225 PS Forge FM225TH
+
+
+
+
1.8T Audi S3 Upgrade Turbo Krümmer High-Flow
+
Total
€8,424.25
incl. VAT

Immediately ready for shipment!

You need this extra to make it last:

400 PS: That's an announcement! To drive this power, you have to replace your connecting rods with I-beam connecting rods and forged pistons ➜ We offer you a complete carefree package: forged pistons and I-beam connecting rods in a set. A sports clutch kit is required for the 400 PS to reach the road. For the exhaust you should use a 76 mm exhaust system. To keep the oil temperature in a healthy range, an oil cooler kit must be installed!

BAR-TEK® TIP!

Latest at this stage we recommend to install also our 1.8T Catch can kit.

Latest at this stage we recommend to install also our 1.8T Catch can kit.

Product Bundle 4
Group 6
Group 6
Group 6
Group 6
BAR-TEK® 1.8T AMU, APX & BAM Stage 4 - Bundle
With upgrade manifold and RACE oil pump
Professional tuning
Maximum performance with your S3
The engine software must also be adapted for every tuning!
Benzindruckregler einstellbar 1.8T; VR6; R32 BAR-TEK®
+
Pressure pipe
+
+
+
+
+
+
+
+
1.8T Upgrade Luftmassenmesser BAR-TEK®
+
Pop-off Ventil Splitter BAR-TEK®
+
Total
€8,825.02
incl. VAT

Immediately ready for shipment!

You need this extra to make it last:

We'll tell you here shortly what you need for 666 hp.

BAR-TEK® TIP!

Here is the absolute power amplifier for your 1.8T 20V! Bartek has successfully driven this kit in his Golf 4 - with top times!

Here is the absolute power amplifier for your 1.8T 20V! Bartek has successfully driven this kit in his Golf 4 - with top times!

Product Bundle 5
Group 6
Group 6
Group 6
Group 6
Group 6
BAR-TEK® 1.8T AMU, APX & BAM Stage 5 - Bundle
Tuning kit stage 5
Even more power
High-end tuning
The engine software must also be adapted for every tuning!
Benzindruckregler einstellbar 1.8T; VR6; R32 BAR-TEK®
+
+
+
+
+
Anschlusskit für BOSCH 044 Kraftstoffpumpe Saugseite
+
+
Halter für Benzinpumpe oder Benzinfilter SYTEC
+
Downpipe Kit universal zum selber bauen BAR-TEK®
+
+
Pop-off Ventil Splitter BAR-TEK®
+
Total
€9,804.40
incl. VAT

Immediately ready for shipment!

This is how you improve the cooling:

If you want to get the full performance out of your engine, you must not forget the cooling. Even a little extra power puts a lot of strain on your engine! The thermal load increases and affects all areas of your vehicle, even the transmission suffers from the new power. At best, the hard-earned power is reduced again; at worst, your engine suffers major damage. So that you can tune your engine safely and reliably, we provide you with everything you need for perfect cooling. Although it is ideal to install all parts together in a cooling bundle, you don't necessarily have to order everything at once. Each product helps you to improve cooling.

Cooling bundle
BAR-TEK® 1.8T AMU, APX & BAM Cooling - Bundle
Optimal cooling
Maximum performance
Top value for money
The engine software must also be adapted for every tuning!
+
+
RS Thermostat und Lüfterschalter
+
Total
€579.66
incl. VAT

Immediately ready for shipment!

The perfect turbocharger for your tuning project

The turbocharger is one of the most important tuning measures of all, as there is huge performance potential in the compression ratio. This is why you will find all the turbos from the guides and suitable alternatives in this special turbo guide, for example if you prefer a specific manufacturer. We have also compiled a lot of information for you on the subject of turbochargers, which you should take a look at. In addition to the detailed turbo tips, there is a page on running in engines correctly, turbo lag and, of course, our 14 turbo rules.

Racing engines from BAR-TEK®

If you don't feel like tuning your engine all by yourself, you can also get a ready-tuned engine from us. Our racing engines are designed for maximum performance and maximum driving pleasure and leave nothing to be desired. The components included are perfectly matched, finely balanced and suitable for the highest speeds. Because we use components from motorsport, such as forged pistons and steel connecting rods, our racing engines are extremely stable. This means you get a completely finished engine that not only delivers full power, but is also safe and has a long service life.

The performances indicated here are based on our experience and can only indicate a tendency. All data are therefore without guarantee.

Each engine is different and many factors, such as fuel used, software tuning or mileage, play an important role in the final performance. Put your engine through its paces on our 1000 PS dynamometer!

Need help with 1.8T tuning?

If you have any further questions, we are always happy to help. Contact us here.

Bartek Bartoszewicz
Tuning Professional
His first car was a Polo Mk1 with a 40 Weber twin carburetor and 129 PS (95 kW). His second was an Audi 50. Today Bartek tunes Lamborghinis to 1000 PS (735 kW). Even as a young boy, Bartek disassembled vehicles and put everything back together better. He wrote his high school diploma with oil on his fingers. The trained automotive mechanic with a focus on engines and gearboxes was determined to go into motorsports. In his 10 years in Formal 1, he supervised 73 races, including as engine mechanic for Ralf Schumacher at Toyota. Since 2010, he has dedicated himself fully to his company BAR-TEK® and helps his customers to bring VW and Audi engines to peak performance.
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BAR-TEK®

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We love engines, performance and speed. Here you will find everything you need to increase the performance of your engine. Especially the professional engine tuning for VW and Audi is one of our specialties. We are also happy to advise you individually and show you on our dynamometer, what you can get out of your car. In addition, we take over the tuning completely for you. Just give us a call!

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Bartek
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