Pure Turbos BMW N55 Stage 2 Turbo Upgrade for M2, M135i, M235i, 335i and 435i
The wolf in sheep’s clothing for your BMW N55. The Pure Turbos N55 Stage 2 is the go-to BMW N55 turbo upgrade for drivers who want big power with OEM reliability and a stealth stock appearance. Built into the original BMW turbo housings, this hybrid turbocharger looks factory from the outside yet is engineered to deliver serious performance gains. Perfect for BMW M2, M135i, M235i, 335i and 435i owners seeking a bolt-on, high-performance, VSR balanced, billet-wheel turbo solution.
This N55 Stage 2 turbocharger is designed to reach 500+ whp potential with the right supporting mods and tune. It utilizes all OEM housings, so it fits like stock and keeps that clean OEM look. We have supplied and used these units for years and our customers consistently report excellent results, strong power and dependable performance.
Why choose the Pure Turbos N55 Stage 2 turbo?
- Upgraded point-milled billet compressor wheel for maximum flow
- Upgraded HiFlow turbine wheel for improved exhaust flow
- Dual compressor and dual turbine oil seals for durability
- Large diameter 360-degree thrust upgrade for reliability under high load
- Extensive turbofold machining and modifications for efficient performance
- VSR balanced for smooth, reliable operation
- OEM housing hybrid turbo. Appears stock, installs like stock
Real-world performance
Typical results on quality pump fuel with supporting modifications and a proper custom tune:
- E chassis BMW N55 (2011 to 2013) on 93 octane or 99 RON: usually 430 to 480 whp with intercooler, downpipe, chargepipe, upgraded LPFP and a custom tune
- F chassis BMW N55 (2012+) on 93 octane or 99 RON: usually 430 to 450 whp with intercooler, downpipe, chargepipe and a custom tune. For 450+ whp support, an upgraded high pressure fuel pump is recommended
Dyno-proven builds have recorded 520 to 536 whp on well set up cars. Results vary based on fuel quality, hardware, health of the engine and calibration.
Fitment and compatibility
For BMW models equipped with the N55 engine:
- 1 Series F20 F21 M135i
- 2 Series F22 F23 M235i
- 3 Series F30 F31 335i
- 4 Series F32 F33 F36 435i
- M Series F87 M2
PWG vs EWG fitment notes
This turbo is compatible with both Pneumatic Wastegate (PWG) and Electronic Wastegate (EWG) N55 applications. You will need the correct Genuine BMW Turbo Installation Kit for your wastegate type:
- PWG. Genuine BMW Turbo Installation Kit for PWG required
- EWG. Genuine BMW Turbo Installation Kit for EWG required
How to identify your wastegate type:
- PWG. External vacuum canister and rod-actuated wastegate
- EWG. Electronic actuator mounted to the turbo with an electrical connector
Recommended supporting modifications
- High-performance intercooler
- High-flow catted or catless downpipe
- Aluminium chargepipe
- Upgraded low pressure fuel pump for higher power targets
- Upgraded high pressure fuel pump for sustained 450+ whp builds
- Custom ECU calibration by a reputable BMW tuner
- F chassis owners. Highly recommended to add the Pure Turbos F-Series N55 High Flow Inlet Pipe
Core exchange and deposit
This product is supplied on an exchange basis. You must send in your core turbocharger to be upgraded. Send the core turbo only. Any additional parts sent with the core may not be returned. If you cannot send your core in advance, a refundable deposit is available:
- EWG deposit. £575
- PWG deposit. £375
Deposits are refunded after inspection when your non-damaged, serviceable core is received. Subject to availability of exchange units. Please contact us to confirm.
Installation and tuning
Professional installation and calibration are essential for best results and reliability. We offer in-house fitting at Nforcd in Warwickshire. Request a quote at Sales@nforcd.com.
Compatibility check
We verify compatibility before dispatch. Provide your UK registration number or the last 7 digits of your VIN at checkout and our team will confirm fitment for your BMW N55 M2, M135i, M235i, 335i or 435i.
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Part number
PT-F-N55-S2
Manufacturer
Pure Turbos
Warranty
1 year manufacturer warranty.