B58 engine bay with a red B58 Racing silicone inlet pipe

BMW B58 · S58 · Toyota Supra MK5

Performance parts for the B58

Tunes, turbos, fueling, intakes, exhaust and more for Gen 1 and Gen 2 B58 and the GR Supra, from a B58 shop in Dallas. Now with fitment for S58 M cars too.

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Our G30 540i build

Why B58 Racing

Built by B58 owners

We're a small B58 shop in Dallas. We've built our own M240i and G30 540i, so we can tell you how a part fits, what it changes and what it needs, and we'll confirm fitment for your car before you order.

  • B58 first

    Every listing shows which B58 and S58 cars it fits, by chassis and generation.

  • Real fitment help

    Send your VIN and we'll confirm Gen 1, Gen 2 or S58.

  • Clear ship times

    Each part shows when it ships: 1–2 business days from Dallas, or 3–7 from the brand.

B58 buying guides

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Buying guide

Best A90 Supra Mods, In the Order to Do Them (GR Supra 3.0)

Tune it first. On a GR Supra 3.0, a flash tune or a JB4 is the biggest gain per dollar. Next, add a downpipe and a Stage 2 map, and a better heat exchanger so the car stays strong on hot days. After that comes fuel: flex

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Buying guide

B58 Fueling Explained: HPFP, LPFP, Port Injection, Flex Fuel and E85

The B58 fuel system has two pumps. The low-pressure pump (LPFP) in the tank feeds the high-pressure pump (HPFP) on the engine, which feeds the direct injectors. On a tuned car, the HPFP is usually the first wall, and eth

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Buying guide

B58 Gen 1 vs Gen 2: How to Tell Which You Have and Why It Matters

Gen 1 is the original B58 (engine code B58B30M0), found in F-chassis cars and early G-chassis cars like the 2017–2019 540i. Gen 2 is the 2018 "technical update" or B58TU (codes B58B30M1 and B58B30O1). It's in the G20 M34

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Buying guide

Best B58 Mods, In the Order to Do Them

Start with a tune. It is the biggest gain per dollar on any B58. Then add a downpipe and a Stage 2 map, then an upgraded high-pressure fuel pump (HPFP) and an ethanol blend. Only after that should you think about a bigge

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Buying guide

bootmod3 vs MHD vs JB4 for the B58: Which Should You Buy?

For most B58 owners who plan to keep modding, buy a flash tune. bootmod3 is the polished, cloud-based choice with a big custom-tuner network. MHD costs less to start and keeps maps and logs on your phone. The JB4 is a pi

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Buying guide

BMW G20 M340i / G22 M440i Mods Guide: The Best B58 Upgrades, In Order

Tune it first. On a G20 M340i or G22 M440i, a tune is the biggest gain for the money. Then add a downpipe and a Stage 2 map, an aluminum charge pipe, and better cooling. Fuel upgrades and ethanol come after that. Suspens

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