This is our tried and tested tune for your VR38. These tunes were designed on a Dynojet dyno and tested in the real world! With months of research and development, you can trust our tunes will give you the most reliable power!

KEY FEATURES:

• Underground Tuning Device (Powered by EcuTek) w/ Map Switching From Mobile Phone & Steering Wheel!
• Gain up to 110 Horsepower & 180 FT/LB of Torque
• Launch Control
• Rolling Anti-Lag
• Adjustable Boost Control
• Advanced Traction Control
• 7,400 RPM Redline
• Multiple Octane Options (91 Octane & 93 Octane)
• Improved Throttle Response
  
• Top Speed Limiter Removed
• Neutral/Park Rev Limiter Raised to Redline
• Ignition timing enhancements
• Air/Fuel Ratio enhancements

STAGE 1:

• REQUIREMENTS: Mid Pipe or Y Pipe
• GAINS: 35 Horsepower
  
• TUNE OPTIONS: Burbles

STAGE 2:

• REQUIREMENTS: Mid Pipe or Yipe & 3 Inch Intakes
• GAINS: 60 Horsepower
  
• TUNE OPTIONS: Burbles

STAGE 3:

• REQUIREMENTS: Mid Pipe or Y Pipe, 3 Inch Intakes, Downpipes, Injector Dynamics 1050 CC Injectors, Fuel Pumps
• RECOMMENDATIONS: Injector Dynamics 1300 CC Injectors (If You Plan On Doing Bigger Turbos)
• GAINS: 120 Horsepower
  
• TUNE OPTIONS: Burbles, Advanced Burbles, Super Burbles

STAGE 3+:

• REQUIREMENTS: Mid Pipe or Y Pipe, 3 Inch Intakes, Downpipes, Injector Dynamics 1050 CC Injectors, Fuel Pumps, Flex Fuel Sensor
• GAINS: 150 Horsepower
  
• TUNE OPTIONS: Burbles, Advanced Burbles, Super Burbles

MOBILE APP FEATURES:

• Map Switching From Mobile Device (Apple or Android) 
• Return to Stock at Any Time
• Diagnosis & read fault codes from the motor & clear fault codes
• Data log & record the vehicles parameters and send them back to Underground Tuning

REQUIREMENTS BEFORE TUNING:

• This Tune is PLUG & PLAY! Just plug the Underground Tuning Device into your OBDII Port and Tune From Your Phone!