Direct-fit Stage 3 turbo upgrade for the Audi TT Quattro 1.8T (AMU engine code only, printed on engine block). Delivers up to 350 HP with faster spool, improved airflow, and long-lasting durability. Built and precision-balanced in Michigan, USA. Free Ground Shipping within the continental United States.
Stage 3 Audi TT Quattro 1.8T 350hp AMU Turbocharger
$1,095.00
Description
Limited Quantity – Stage 3 Performance Turbocharger for Audi TT Quattro 1.8T (AMU Engine Code)
Hand-built in our Michigan facility by a master turbo technician, the Turbo Concepts Stage 3 delivers up to 350 WHP with lightning-fast spool and unmatched reliability. Every unit uses hand-picked, premium components from trusted OEM suppliers and undergoes a rigorous multi-step inspection and balancing process.
At the heart of this build is a custom DZ6 9-blade turbine made from OE-spec 713C Inconel, paired with a TCX 11-blade billet compressor capable of moving 38 lbs/min of air. The result is a responsive, high-flow turbo that transforms your AMU-powered TT Quattro into a true performance machine.
Key Features & Upgrades
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Custom DZ6 9-Blade Turbine Wheel – OE-spec 713C Inconel for extreme heat resistance.
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TCX Stage 3 11-Blade Billet Compressor Wheel – Ultra-high flow, 20% larger than stock.
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20% Larger TC Turbine Housing & Ported Upgrade Flapper – Reduces back pressure, improves flow.
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20% Larger TC Compressor Cover – Maximizes intake efficiency.
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Custom 1-Bar Billet Actuator – Calibrated for precise boost control.
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High-Temp Silicon Molybdenum Ductile Steel Turbine Housing – Built for long-term durability.
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Performance 360° Thrust Bearing & Upgraded Internals – Improves oil flow, load capacity, and longevity.
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Bolt-On Installation – Direct fit for AMU engine code (upgrades recommended).
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Necessary Gaskets Included – Ready for installation.
Recommended Supporting Upgrades
While bolt-on ready, we highly recommend the following to achieve full 350 WHP potential:
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Performance tuning software
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Upgraded clutch
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High-flow silicone intake hose
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550cc fuel injectors
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High-flow fuel pump
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Performance intake & exhaust system
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Larger MAF housing
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Front-mount intercooler
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High-flow exhaust manifold
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Built motor for maximum reliability at high boost
Precision Build Process
Every Turbo Concepts Stage 3 unit is:
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100% built & balanced in Michigan
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Inspected for exact spec, material quality, and heat treatment
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Integrated with upgraded internals for better oil flow & thrust handling
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Undergoes a 3-step precision balancing process
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Seal-tested for leak-free performance
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Reconditioned components go through a 5-step cleaning process
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Checked in critical areas to ensure defect-free operation
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Backed by a 12-month / 12,000-mile warranty and free technical assistance
Why Choose Turbo Concepts Over Bargain Turbos?
Cheap, overseas-assembled turbos often cut corners in casting quality, balancing precision, and component durability. Our units are American-built using proven OE castings and strict quality control — giving you confidence and long-term performance you can trust.
This is the most turbo you should run without built internals.
If you’re ready to unlock the full potential of your AMU Audi TT Quattro, this Stage 3 upgrade delivers the airflow, durability, and responsiveness you need.
FAQ
Q: Will this fit my car?
A: Fits AMU engine code Audi TT Quattro 1.8T models. Check the code stamped on your engine block.
Q: Do I need other mods?
A: Bolt-on ready, but for full 350 HP potential we recommend: tune, upgraded clutch, 550cc injectors, fuel pump, front-mount intercooler, and built motor for max boost reliability.
Q: How is it better than stock?
A: 20% larger turbine & compressor housings, billet compressor, 713C Inconel turbine, faster spool, and much greater airflow — all built to last.
