Get the most out of your vehicle today with Unitronic Performance ECU software for the VW Mk4 Golf, GTI, Jetta, GLI and New Beetle.
Please note that your vehicle must be present at one of our shops in order to install it.
Choose your software stage:
Stage 1 - 215 HP / 235 LB-FT (+35 HP / +62 LB-FT)
Performance Software Precisely Engineered for a completely stock car.
- Requires 91 Octane Fuel
Stage 1+ - 225 HP / 260 LB-FT (+45 HP / +87 LB-TQ)
Performance Software Precisely Engineered for a completely stock car.
- Requires 93 Octane Fuel
Stage 2 - 235 HP / 275 LB-FT(+55 HP / +102 LB-FT)
Performance Software Precisely Engineered for use with an upgraded exhaust system.
- Requires an upgraded aftermarket downpipe
- Requires 93 octane fuel
- Upgraded air intake recommended
- Upgraded diverter valve recommended
- Upgraded intercooler recommended
Stage 2+ - 265 HP / 300 LB-FT(+85 HP / +127 LB-FT)
Performance Software Precisely Engineered for use with a K04 turbocharger.
- Requires an upgraded aftermarket downpipe
- Requires 93 octane fuel
- Requires K04 turbocharger
- Requires Audi TT225 fuel injectors (386cc)
- Requires Audi TT225 MAF housing (stock sensor still required)
- Requires upgraded air intake
- Upgraded diverter valve recommended
- Upgraded intercooler recommended
Features Included With All Stages
- Engineered with Strict Industry Standards
- Extensively Tested Under Various Driving Conditions
- Factory Safety Limiters Retained
- Optimized Responsiveness and Drivability
- Optimized Smoothness and Driving Comfort
- Power Delivery Perfectly Optimized Throughout the Power Band
- Improved Fuel Efficiency
- Speed Governor Removed
- RPM Limiter Increased to 6900
- Cold Weather Start and Warm up Improved
- Lower End Hesitation (Lag) Removed
- Optimized for an Upgraded (DV) Diverter Valve
Fitment/Applications
- 1999-2005 VW Mk4 Golf, GTI, Jetta, GLI, New Beetle 1.8T
- 1999-2005 Audi 8N TT 1.8T (180 HP version)
Installation
This software must be installed at one of our shops, please contact one of our shops to set up an appointment.
Video
Please note that this software may not be available for all ECU IDs.