The TTE390 is a performance turbo upgrade for VAG 1.8T 20V engines, developed by TheTurboEngineers and based on a heavily modified BorgWarner K04-064 base. This setup is built for high flow, lower back pressure and a strong top end, with 390+ hp proven (with the right hardware and tuning).
You can choose a new replacement turbo or your own original K04-064 (in good condition) send for an upgrade. Please note: this is no plug & play Upgrade for 1.8T. Adjustments and customization are required.
Advantages
• 390+ hp proven on 1.8T (with correct setup)
• Large TTE billet compressor (2871X) for high efficiency and flow
• K16 high-flow turbine for lower back pressure and lower EGT
• CNC silencer delete for less restriction and better flow
• 360° motorsport bearing package for durability under high loads
• VSR high-speed balanced up to 250,000 rpm, including balance sheet
• Choice: new turbo or upgrade your K04-064
Technical specifications
• Base: OEM BorgWarner K04-064 housings/parts (depending on choice)
• Compressor: TTE 2871X billet next-gen geometry
• Turbine: BorgWarner K16 (clipped/high-flow)
• Storage: TTE 360° motorsport bearing package
• Modifications: CNC machined compressor housing (optimized tolerances)
• Flow upgrade: CNC silencer discharge delete
• Balancing: parts + CHRA VSR high-speed (up to 250,000 rpm)
• Documentation: balance test result document included
• Required: software recalibration
• Installation: not plug & play, manufacturing/customization required
• Origin: Made in Germany
Compatibility
Suitable for VAG 1.8T 20V engines in, among others:
• Audi A3 / S3 / TT (1.8T 20V)
• Volkswagen Golf / Bora / Passat (1.8T 20V)
• SEAT Leon (1.8T 20V)
• Skoda Octavia (1.8T 20V)
Note: Exact installation depends on your manifold/downpipe/piping. This product requires customization, so check your setup beforehand.
Contents
• TTE390 upgrade turbo (new or upgraded, depending on option chosen)
• Balance test result document (numbered)
Frequently Asked Questions
Is this turbo plug & play on a 1.8T?
No. This is a high-end upgrade that requires fabrication/modification or custom parts.
Do I need a tune?
Yes. Software recalibration is required to drive safely and utilise your potential.
Can I send my own turbo?
Yes, provided it is a original BorgWarner K04-064 is and technically in good condition.
Delivery time
• New turbo: 3 - 6 working days
• I am sending my old turbo: 20 - 40 working days