TTE4XX – Upgrade Turbo – Alfa Romeo 4C 1750 TBi

Description

The TTE4XX is TheTurboEngineers' latest hybrid turbo upgrade for the Alfa Romeo 4C with the 1750 TBi engine. This turbo upgrade delivers more than 350 hp, while retaining the legendary fast spool-up and sharp throttle response for which the 4C is renowned. A true plug-and-play upgrade that adds modern turbo technology to the iconic Alfa DNA.

The original turbo forms the basis, but TTE completely redesigns it. The standard compressor is replaced by a larger, billet-milled 6+6 compressor wheel with advanced geometry for improved airflow and efficiency. The compressor housing is CNC-machined to perfectly match the new profile, resulting in a broader and more powerful power band.

The turbine side has also been upgraded: a larger, lighter 9-bladed high-flow turbine Replaces the standard version, resulting in lower exhaust gas temperatures, less back pressure, and a smoother power delivery. TTE's internal motorsport bearing system ensures extremely durable operation at high boost pressures, without loss of response. Each turbocharger is individually balanced using TTE's proprietary high-speed VSR technology and delivered with an official balance sheet report.

Advantages

• Original OEM turbo as a basis
• Billet milled 6+6 compressor wheel
• 9-blade high-flow turbine
• Reinforced TTE motorsport bearing system
• Retain original actuator and diverter valve
• Plug & Play installation
• Power: 350+ hp possible
• Individually balanced with VSR balance sheet document
• Software recalibration recommended
• Made in Germany

Contents

• Upgrade Turbo

Frequently Asked Questions

How much power does the TTE4XX deliver?
The TTE4XX delivers over 350 hp, depending on tuning and supporting modifications.

Is the upgrade Plug & Play?
Yes, the turbo fits directly onto the original connections of the Alfa 4C without any additional modifications.

What are the advantages of the 9-blade turbine?
This provides higher airflow, lower back pressure and cooler exhaust temperatures, leading to higher efficiency and stability.

Does the ECU need to be modified?
Yes, software recalibration is recommended to ensure maximum power and reliability.

Is the turbo delivered balanced?
Yes, every turbo is dynamically balanced using high-speed VSR technology and comes with an official test document.

Available variants

• New turbo (20 – 40 working days)
• I send my old turbo (20 – 40 working days)

Article number: TTE10415