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BMW B58 3.0T Engine Guide — Supra A90, M240i, M340i, 540i | Tuning Stages & Build Paths | YPG Motorsport
BMW B58 3.0T Engine Guide — Supra A90, M240i, M340i, 540i The BMW B58 is arguably the most important inline-six BMW has produced since the legendary 2JZ-GTE era of Toyota collaboration — and ironically, it now powers a Toyota. A 3.0-liter single-turbocharged inline-six, the B58 is the performance backbone of BMW's non-M lineup and the heart of the Toyota GR Supra A90. Found in everything from the M240i and M340i to the 540i and Z4 M40i, the B58 is one of the most tunable platforms on the market today. This guide covers the architecture, Gen 1 vs Gen 2 differences,...