Unitronic Stage 3 GT28 Turbo Performance Engine Tune For VW/Audi 1.8L R4 / 5VT 

Big Turbo Software Precisely Engineered to Run 20psi of Boost on a Stock Engine.

*Ecu needs to be sent to the Head Office. The turnaround time is approximately 1-2 weeks from the receiving date. Please follow the Unitronic Shipping Form

Big Turbo Options:

Turbo: GT28 Series Turbo or Similar Size

Throttle Body Options: Stock Throttle Body Only

Cam Options: Stock Cams Only

Emissions Delete Options: No

Mafless Options: No

Features: 

• Engineered with Strict Industry Standards
• Extensively Tested Under Various Driving Conditions
• Optimized Responsiveness and Drivability
• Optimized Smoothness and Driving Comfort
• Power Delivery Perfectly Optimized Throughout the Power Band
• Speed Governor Removed
• RPM Limiter Increased to 7500 (With Stock Head)
• Optimized for an Upgraded (DV) Diverter Valve or (BOV) Blow Off Valve
• Ignition Timing Precisely Calibrated for Higher Octane Fuel

Required Hardware:

• Bosch Green Giant 415cc Injectors
• 3.5 Bar FPR
• OBD2 VR6 or TT225 Maf Housing (Keep Stock Sensor)
• Upgraded Exhaust System
• Upgraded Intercooler
• Cold Air Intake / Short Ram

Recommended Hardware:

Upgraded Fuel Pump (For over 300HP)

Upgraded (DV) Diverter Valve

Upgraded Rods (For Over 300WTQ)

Fitment: 

2000-2005 VW Golf 1.8L R4 / 5VT

2000-2005 VW GTI 1.8L R4 / 5VT

2000-2005 VW Jetta 1.8L R4 / 5VT

2004-2005 VW Jetta GLI 1.8L R4 / 5VT

2002-2005 VW Beetle 1.8L R4 / 5VT

1997-2005 VW Passat 1.8L R4 / 5VT

2000 Audi A3 1.8L R4 / 5VT

2000-2005 Audi TT 1.8L R4 / 5VT

2000-2005 Audi TT 225 1.8L R4 / 5VT