Audi B6 / B7 S4 4.2L V8 Performance Software

B6/B7 S4 4.2L V8 Performance Software

United Motorsport software improves all of the following aspects of the VR6 motor:

  • Speed limiter removed
  • Increased horsepower and torque
  • Smoother idle
  • Smoother under partial throttle conditions
  • Improved engine response
  • Optimized power delivery
  • Working Immobilizer
  • Fuel Octane-indifferent performance map
  • Improved fuel economy

Select your desired software application:

N/A Stage 1

Price: $499

Forced Induction Stage 1

Use 440cc injectors

Recommended Usage: Eaton MP90 Supercharger and low boost turbo applications

Price: $1399