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Audi RS4 B8 4.2 FSI 450Hp - Stage 1 |
Upgrade stages ranging up to 475 Hp for the 4.2 FSi engine of Audi RS4.
Stock engine specs: Power: 450hp
Stage 1: Engine upgrades: -Stage 1 Software upgrade Engine performance: Power: 475hp
Software upgrades: Use of 95/100 octane fuel is mandatory.
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