Audi Supercharged 3.0T Heat Exchanger Upgrade Guide: B8, B8.5, C7, and C7.5
Your tuned S4, S5, A6, A7, S6, S7, Q5, or SQ5 feels strong on the first pull. By the third, the power is noticeably softer. That's heat soak, and on the supercharged 3.0T, the stock heat exchanger ...
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