Weistec BMW S55 W.3 Turbo Upgrade for F80 M3, F82/F83 M4, F87 M2 Competition
Unlock serious power from your BMW S55 3.0 twin turbo engine with the Weistec W.3 Turbo Upgrade. This premium, bolt-on hybrid turbo solution delivers substantial horsepower and torque gains with strong top-end performance while maintaining near-stock spool and response. Perfect for BMW M2 Competition, M3 and M4 owners who want a reliable OEM-fit turbo upgrade that looks stock under the bonnet but performs like a true high-performance setup.
We and our customers have run these W.3 turbos and the feedback has been consistently excellent. Spool is sharp, power is relentless through the rev range and drivability remains superb for fast road and track use.
Why choose the Weistec W.3 S55 turbo upgrade
- Significant horsepower and torque increases depending on fuel and supporting modifications
- 5-axis CNC machined, high-flow impeller wheel for efficient, reliable power
- High-speed balanced for smooth, OEM-level operation and longevity
- Stock-appearance housings retain an OEM look in the engine bay
- 100 percent bolt-on install using original oil and coolant lines
- Requires your turbos and inlets to be sent to Weistec for machining and rebuild
- Core exchange option available for minimal downtime
- Weistec W.3 Turbo Specific ECU Upgrade recommended for maximum results
How the upgrade works
Factory turbochargers are fully disassembled and inspected. The compressor cover and centre cartridge are precisely machined to accept Weistec’s 5-axis CNC impeller wheel. Externally, the turbos remain stock-appearing for a stealth install. Turbos are reassembled with new seals and are high-speed balanced for OEM-grade smoothness and service life. All original S55 oil and coolant lines bolt straight up for a straightforward installation.
Performance figures
- Weistec Horsepower: 720 HP (+295 HP)
- Weistec Torque: 750 TQ (+344 TQ)
Figures vary based on fuel quality, ECU calibration and supporting hardware. For best results pair with the Weistec W.3 Turbo Specific ECU Upgrade, quality intercooling and appropriate exhaust and fueling.
Compatibility
- BMW M Series F80 M3 Saloon S55 (2012-2015)
- BMW M Series F80 LCI M3 Saloon S55 (2015-2018)
- BMW M Series F82 M4 Coupe S55 (2013-2017)
- BMW M Series F82 M4 GTS Coupe S55 (2013-2017)
- BMW M Series F82 LCI M4 Coupe S55 (2016-2019)
- BMW M Series F82 LCI M4 CS Coupe S55 (2016-2019)
- BMW M Series F83 M4 Convertible S55 (2013-2017)
- BMW M Series F83 LCI M4 Convertible S55 (2016-2019)
- BMW M Series F87 LCI M2 Competition S55 (2018+)
Installation requirements
Please note you will require the following additional parts for installation:
- Genuine BMW S55 F80 F82 F87 Turbo Installation Kit (M2 Competition, M3 and M4)
- Genuine BMW S55 F80 F82 F83 Turbo Coolant Supply and Return Lines Kit (M3 and M4)
- Genuine BMW S55 F80 F82 F87 Service Kit (M2 Competition, M3 and M4)
- 2x Castrol Edge 5W-30 M Fully Synthetic Engine Oil
- 4x Genuine BMW Radiator Engine Antifreeze and Coolant 1.5 Litre
- 8x De-Ionised Water 1 Litre
This upgrade requires your S55 turbos and inlets to be sent to Weistec. Core exchange is optional.
Professional fitting and tuning
For a seamless, professional installation and ECU calibration, we recommend our in-house fitting service at Nforcd in Warwickshire. Request a quote at Sales@nforcd.com and our team will guide you on build spec, timelines and mapping options for your goals.
Part number
01-555-01859-9
Manufacturer
Weistec
Photos and video
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