Owen Developments VAG TFSI Upgrades (Audi S3 Mk. 2 TFSI, Golf Mk. 5/6
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Owen Developments VAG TFSI Upgrades (Audi S3 Mk. 2 TFSI, Golf Mk. 5/6 TFSI) 300-400hp - Owen Developments

Owen Developments VAG TFSI Upgrades (Audi S3 Mk. 2 TFSI, Golf Mk. 5/6 TFSI) 300-400hp

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Please contact us to order, we want to talk to you about your application and supply you with the best turbo to meet your performance aims.


Owen Developments offer two stages of upgrades to VAG TFSI engines as fitted to the Audi S3 Mk.2 TFSI, VW Golf Mk. 5 TFSI and the VW Golf Mk. 6 TFSI. These upgrades are based on genuine Borg Warner K04 turbos as fitted to the Audi S3 Mk. 2.

For VW Golfs a fitting kit is required, which can be supplied by Owen Developments.

Stage 1 300-350bhp

  Cut back turbine blades to improve exhaust gas flow at high engine load

  Owen Developments designed and manufactured 360° thrust bearing kit for increased reliability and allowing for increased boost levels

  Turbine and Compressor wheels balanced to a higher tolerance than standard

  Centre Housing rotating Assembly (CHRA) rebuilt and balanced to a higher tolerance than standard

  Custom Forge Motorsport actuator built to Owen’s specification

Stage 2 350-400bhp

The same specification as Stage 1, with the exception of;

  Lightweight HTA Billet Aluminium Compressor Wheel with an advanced aerodynamic profile for unrivalled transient response and efficiency, anodized in red, black or silver (subject to availability)

  65mm Compressor Wheel Exducer

  Re-profiled compressor cover to capitalize on the fitment of the HTAwheel


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