BMW N55 TTE550 Turbocharger Upgrade – Pneumatic Wastegate PWG (135i, 335i, M135i)
Upgrade your BMW N55 with the TTE550 turbocharger for serious, reliable power. This proven hybrid turbo upgrade is engineered by TheTurboEngineers in Germany and delivers outstanding spool, high-flow performance and genuine plug and play fitment for pneumatic wastegate PWG BMW N55 engines. Ideal for BMW 135i, 335i and early M135i owners looking for a direct-fit, high-performance turbocharger upgrade with OEM-like drivability and up to 550 PS potential when paired with the correct supporting modifications and tuning.
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Image for illustration only. Actual product may differ.
Why choose the TTE550 for your BMW N55 PWG?
The TTE550 keeps your genuine BMW turbocharger housings and transforms them with a CNC-milled billet 7+7 compressor wheel, a much larger lightweight 9 blade turbine and optimised clearances for maximum efficiency. The result is a wider compressor map, lower exhaust back pressure, faster response and serious top-end flow. TTE’s motorsport bearing pack and meticulous high-speed balancing deliver durability and silky-smooth operation far beyond standard.
Key performance features
- Genuine BMW turbo housings upgraded by TheTurboEngineers
- Next generation TTE billet 7+7 compressor wheel for high flow and efficiency
- Re-profiled, optimised compressor cover machining for maximum efficiency
- Larger, lightweight TTE 9 blade turbine for lower back pressure and strong spool
- Motorsport bearing pack for durability and reliability
- Plug and play fitment, direct replacement turbo for N55 PWG applications
- Genuine diverter valve retained
- Single components balanced, then CHRA VSR balanced up to 250,000 RPM
- Supplied with serial-numbered balance test result
- Proven up to 550 PS with suitable hardware and calibration
- Engineered and made in Germany by TheTurboEngineers
Our experience
We have used and supplied the TTE550 on BMW N55 platforms and it continues to be a favourite with our customers for its OEM-like drivability, rapid spool and impressive power potential. Consistent results, dependable quality and excellent feedback make this one of the best BMW N55 turbo upgrades for real-world road and track performance.
Compatibility – BMW N55 PWG (2011 to June 2013)
- BMW 1 Series: E82/E88 135i, F20/F21 M135i (early PWG)
- BMW 3 Series: E90/E91/E92/E93 335i, F30/F31 335i (early PWG)
Fits BMW E and F chassis with the N55 turbocharged engine equipped with the pneumatic wastegate (PWG) produced from 2011 to June 2013.
Part numbers
SW10074.2 (Refurbished upgrade of your existing turbo)
TTE10074 (New unit)
Upgrade options
Upgrade your existing turbo: Send us your non-damaged PWG N55 turbo for conversion. The listed price covers the upgrade of a non-damaged unit. If your turbo requires additional parts due to damage or excessive wear, we will quote any extra costs after inspection. Every turbo is closely inspected prior to the upgrade and you will receive an engineer’s report after completion.
New turbo option: Order a brand-new TTE10074 unit built to TTE550 specification.
Please note: If sending a used turbo for upgrade, TTE does not test or recondition any electronic actuators or ancillary components you supply. Where applicable, your original components will be reinstalled.
Lead times and delivery
- Upgrade of your existing turbo: approximately 3 to 4 weeks from receipt of your unit
- New TTE turbochargers: made to order, typically 3 to 4 weeks from order confirmation
Installation and fitting
For professional fitting, mapping and support, we recommend booking installation with Nforcd in Warwickshire. Request a fitting quote: Sales@nforcd.com.
As with any performance upgrade, suitable supporting hardware and ECU calibration are required to achieve the best results.
Quality and balance
Each TTE turbocharger is balanced to a standard beyond OEM. Components are balanced individually up to 2,800 RPM in multiple planes, then the assembled CHRA is dynamically VSR balanced up to 250,000 RPM. Every unit ships with a serial-numbered balance certificate for complete peace of mind.
Warranty
One-year TTE warranty.
Compatibility check before dispatch
To ensure correct fitment, we run a compatibility check prior to dispatch. Provide your UK registration number or the last 7 digits of your VIN at checkout and we will verify the part against your vehicle.
In summary
BMW N55 turbo upgrade seekers looking for a powerful, reliable, direct-fit solution for PWG engines will find the TTE BMW N55 TTE550 turbocharger upgrade delivers exceptional results. High-flow billet compressor, lightweight 9 blade turbine, motorsport bearings and meticulous balancing combine for rapid spool, big power potential and daily-driveable response. Perfect for BMW 135i, 335i and early M135i owners who want a proven hybrid turbo that just works.