K04 Upgrade Turbo On TFSI Engines – How ?

Posted by admin On February 14, 2012 2 COMMENTS

So you have decided to make this upgrade on your 2.0TFSI AXX / BWA engine with a K04 TFSI turbocharger, which is available through OEM or Aftermarket turbo suppliers.

You now have bought the full package of parts listed in the WHAT ? – post about what OEM parts you need based on the ETKA numbers.

This page will as well be updated with pictures of the OEM parts according to the listing with ETKA numbers.


You need to know how you will make all this work on your K03 TFSI

200HP AXX engine

200HP BWA engine

in your

  • Golf V GTI 2.0TFSI
  • Audi TT 2.0TFSI
  • Audi A3 8P 2.0TFSI
  • Seat Leon 2.0TFSI
  • Skoda Octavia 2.0TFSI
  • etc.


You will besides the parts need at least a chiptune for your 2.0TFSI K04 build

You could go with a different stages of the 2.0TFSI K04 kit – since options as downpipe, intake, intercooler, fuel-parts, could take the performance further to what you get from upgrading only the turbocharger.

You will see more on this in the “GAINS” post later.


1: You will need to decide if you :

A: Want to go the 100% OEM K04 kit with a custom chiptune

B: Want to go with package from a tuner  – which could be OEM or Custom K04 kit with a chiptune


2: You will need to know if you :

A: Want to install it yourself

B: Want a mechanic to install the package for you


At least here you will get the entry level install guide for the K04 TFSI Upgrade, and you will get an understanding of how the parts is placed in your engine.

K04 Turbocharger on the 2.0TFSI Engine:

Upgrade K04 Intake w. integraded MAF-sensor and turbocharger on the 2.0TFSI Engine:

Pressure Pipe on the TFSI K04 Turbo – TFSI K04 Diverter Valve Location w. relocation hose to Intake Pipe

So now you have an entry level understanding of the looks of the K04 kit on the engine. Look to the next post to see how the K04 kits are put together by different tuners and finally what gains you can achieve with the K04 Kit on the 2.0TFSI engines.


Through the posts to come i will go through:

- WHAT ? – What do you need to put the K04 turbocharger on the 2.0TFSI in BWA and AXX

- HOW ? – How do you make it all work together

- WHICH ? – Where and from which people can you get this turbo and the parts you need

- GAINS ? – What kind of performance will you gain from upgrading to the above suppliers


Look forward to the next posts on this subject as you will get to know what you need to know to get this extra performance out of the TFSI engine.


So you are maybe in doubt about what you can actually achieve with the stock K03 turbo on these AXX / BWA-1 / BWA engines.

You can look at these links and find the information you want on these subject

TFSI Chiptuning Guide : – http://euroturbo.net/tuning-guides/vw-2-0tfsi-tuning-guide/2-0tfsi-chip-tuning-guide/

General TFSI Tuning Guide : http://euroturbo.net/tuning-guides/vw-2-0tfsi-tuning-guide/


Link to the rest of the “K04 Upgrade Turbo On TFSI Engines” posts you find here:

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