Audi A6 C5 Turbo Upgrade
10-21-2018, 08:07 PM
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Audi A6 C5 Turbo Upgrade
My 2000 Audi A6 2.7T 5-speed automatic had a coolant and oil leak in the left turbo. I decided to replace the K03 turbos with larger K04 turbos. I currently have a stage 1 ECU upgrade. Since this is an everyday vehicle that I do not plan to race, is there a Stage 2 or a Stage 3 ECU upgrade for K04 turbos in my vehicle?
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