Has anyone upgraded their Turbo on their 02 Audi A4 to a K04?

Im trying to figure out if I want to upgrade my standard Turbo K03 to the K04. I want to know If anyone has tried it and how much it cost? And was there a great power increase? Was it worth it? Also can someone tell me how much they spent in detail and what else they needed to have done with it?Has anyone upgraded their Turbo on their 02 Audi A4 to a K04?it is a myth that a bigger turbo gives more power, all turbos are capable of giving any sub 2.0L more than enough boost it is the wastegate/dump valve that determines the boost, in fact a bigger turbo will give more lag as it takes slightly longer to build up speed, originally people used truck turbos off diesel trucks and the lag was horrendous, a K02 will actually give you better performance if you can find a water cooled one as fitted to the latest 272bhp audi TTSHas anyone upgraded their Turbo on their 02 Audi A4 to a K04?the wastegate actuator is adjustable but you can wreck the engine in 30 seconds if you set the pressure too high

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