Pure Turbos Pure Stage 1 B58 Hybrid Turbo Upgrade for BMW M140i M240i 340i 440i - Direct Bolt-On (F20 F21 F22 F23 F30 F31 F32 F33 F36)

Availability update: This specific unit is discontinued. Looking for a stock-location turbocharger that keeps OEM manners but lifts power and torque significantly? We recommend the Pure Turbos Pure800 Stage 2 for B58 or the TTE580 upgrade for the same engine family, covering M140i, M240i, 340i, 440i and more. For guidance on the best option for your goals, email info@mjmodifications.co.uk.

Pure Turbos Stage 1 for B58 straight-six - what made it special

Engineered as an OE-fit, stock-location performance turbocharger for BMW F-Series B58 models, this hybrid delivered rapid spool, strong mid-range punch and everyday drivability. It was a favourite choice for fast-road builds and track-day cars wanting reliable gains without sacrificing factory-like response.

Part number: PT-F-B58-S1

Highlights

• Billet-machined compressor wheel for improved mass flow and efficiency
• CNC-ported housings for precise fit and durability
• High-speed VSR balancing for smooth operation and long-term reliability
• Direct replacement in the factory location with plug-and-play fitment on B58-powered F-Series BMWs

Real-world results

With suitable supporting mods and proper calibration, this hybrid consistently impressed:

• Baseline car with only a panel filter on pump fuel showed gains of over 30 whp and 20 ft lb without a tune
• Same vehicle with a panel filter, JB4 and pump fuel plus meth recorded 481.18 whp and 437.84 ft lb

Figures vary depending on hardware, mapping, fuel quality and vehicle condition.

Fitment

Designed for the following F-Series BMW models equipped with the B58 3.0 petrol turbo engine:

• 1 Series - F20 F21 M140i
• 2 Series - F22 F23 M240i
• 3 Series - F30 F31 340i
• 4 Series - F32 F33 F36 440i

Core exchange information

This product was supplied on a core-exchange basis. Customers sent in their original B58 turbocharger for upgrade. A refundable deposit option was available for those who could not provide a core upfront, refunded once a serviceable OEM unit was received.

Manufacturer and warranty

Brand: Pure Turbos

Warranty: 12 months from the manufacturer

Installation and tuning support

For professional fitting, ECU calibration advice and supporting modifications, book with MJ Modifications in Warwickshire. Request a fitting quote at info@mjmodifications.co.uk.

Compatibility check

To confirm correct fitment before dispatch, provide your UK registration or the last 7 characters of your VIN at checkout.

Customer feedback

We have supplied and used these B58 upgrades extensively. Owners consistently praised the fast spool, strong mid-range surge and factory-like drivability, making this a trusted choice for M140i, M240i, 340i and 440i builds.

Considering alternatives now

Since the Stage 1 is no longer available, our top recommendations are the Pure800 Stage 2 for B58 and the TTE580 hybrid. Both offer bolt-in fitment with excellent headroom for future power goals, suitable for F-Series applications and, in the case of TTE580, also popular on 540i and A90 Supra platforms. For tailored advice, email info@mjmodifications.co.uk.

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