The factory USDM TD04-13T can be upgraded to a larger1 15T, and all the way up to our SUPER 22T. Erittäin mukava ja hauska ajaa ison väännön ansioista. Kulkee jos käskee mutta menee myös matkaa.The VF23 and VF 24 are a great replacement for those who value drivability higher than maximum power. However, the VF 24 is only capable of running around 17 psi. The VF 24 starts to come on around 2900 rpm and will significantly improve power through the midrange over the stock TD04 turbo.