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BMW 545i 4.4 333Hp - Stage 1 |
Upgrade stages up to 355 Hp for the 4.4 engine found in BMW 545i. Stage 1 upgrade, is presented below.
Stock engine specs: Capacity: 4398cc Power: 333hp
Stage 1: Engine upgrades: -Stage 1 Software upgrade Engine performance: Power: 355hp
Software upgrades: Use of 95/100 octane fuel is mandatory.
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