NOTE: There are different order options and various lead-times on TTE turbochargers. A new unit could be purchased or your turbo can be sent out for the upgrade process. Call or email before placing the order as we will have to factor in shipping costs and current exchange rate and research lead times. For customers with EWG turbos, TTE does not test or recondition the electronic actuator you send.  Your sent actuator will be re-installed. 

BMW TTE550 N55 UPGRADE TURBOCHARGER

The TTE550 for the N55 motor. Still keeping the original turbocharger the compressor wheel is exchanged for a TTE milled aluminum wheel with state-of-the-art geometry, 7+7 blade so producing extra power. Equally, we change the original exhaust turbine for a far larger but very lightweight 9 blade TTE designed the turbine for lower exhaust gas backpressure giving greater performance, yet still giving a good spool response.

We also fitted a TTE motorsport upgrade bearing system for durability.

Equilibrium

Precisely balancing our turbochargers is a key critical factor to become a TTE upgrade unit as longevity and performance are paramount. Good balance improves acoustics also. Subsequent great care is taken with all TTE turbochargers to achieving our balance standards. Firstly parts are balanced at slow speeds up to 2800RPM in multiple planes using our single parts machine, then components are assembled and then the CHRA are dynamically balanced, but this time depending on the application at up to 250,000 RPM in multiple planes using our in house VSR machine to acquire the ultimate equilibrium, to a standard far higher than OEM. Each turbocharger is supplied with a serial numbered balance test result document.

Please note if sending a used turbocharger for the upgrade process.  TTE does not test or recondition the Electronic actuator you send.  Your sent actuator will be re-installed

Features

• Genuine Housings & Components
• Highly Efficient Next Gen Billet Compressor Geometry
• Optimised Compressor Cover Machining Clearances
• Genuine diverter valve
• Fitment As Original. Plug & Play
• TTE Billet Larger Compressor Wheel
• TTE High-Flow Bigger Turbine (Unlike others that retains stock turbine)
• Motorsport Bearing Pack
• 550 PS Proven
• Single parts finely balanced then components assembled and core high-speed VSR balanced
• Supplied with a balance test result document
• Proven TTE quality
• Made in Germany

Please Note: For horsepower designations, PS stands for "Pferdestärke", which converts to roughly 98.5HP for every 100PS, so for instance a TTE800 package is roughly 789HP.