The TTE400 is a hybrid turbo upgrade from TheTurboEngineers, designed to transform the classic Porsche 964 with modern turbocharger technology. Based on the original K27 KKK turbocharger, but completely redesigned with the latest generation billet supercharger and high-flow turbine. This upgrade literally brings the 964 into the 21st century—with more power, faster spooling, and greater efficiency.
The original K27 forms the basis, but the heart of the TTE400 is a billet-milled 7+7 compressor wheel with a 63mm inlet. This advanced geometry delivers a higher air mass over a wider rpm range, resulting in more torque and linear power delivery. On the exhaust side, a BWTS high-flow turbine reduces back pressure and improves gas flow.
The BWTS bearing system ensures stability and durability at high rpm and during extended use. Each turbocharger is carefully balanced using TTE's high-speed VSR technology, with all components individually tested to significantly exceed OEM standards.
Advantages
• Original K27 KKK turbo as a base
• Billet 7+7 compressor wheel (63 mm inlet)
• BWTS high-flow turbine
• BWTS bearing system for increased reliability
• Power: 400 hp possible
• Faster spool and improved efficiency
• Individually VSR balanced with test document
• Software recalibration required
• Plug & Play installation
• Made in Germany
Contents
• Upgrade Turbo
Frequently Asked Questions
How much power does the TTE400 deliver?
The TTE400 is designed for 400 hp, depending on tuning and fuel quality.
Is this upgrade Plug & Play?
Yes, the turbo fits the original mounting points of the Porsche 964.
What are the advantages over the standard K27?
A more modern billet compressor design with higher airflow, faster spooling and greater efficiency across the entire RPM range.
Does the ECU need to be modified?
Yes, software recalibration is necessary to utilize full power and efficiency.
Is the turbo tested and balanced?
Yes, each turbo is individually balanced and supplied with a VSR balance report.
Available variants
• New turbo (3 - 6 working days)
• I send my old turbo (20 - 40 working days)