This is our tried and tested tune for your Mopar. 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!

70+HP | 40TQ GAIN

KEY FEATURES:

• Underground Tuning Device w/ Map Switching From Mobile Phone!
• Gain up to 70+ horsepower and 40FT/LBs of torque
• Improved Throttle Response
• Top Speed Limiter Removed
• Neutral/Park Rev Limiter Raised to Redline
• Ignition timing enhancements
• Air/Fuel Ratio enhancements

OPTIONAL FEATURES:

• Burbles
  
• Advanced Burbles (Requires Stage 2)
• Super Burbles (Requires Stage 2)
  
• Multiple Octane Options (91 Octane & 93 Octane)
• Transmission Tune
• Drift Mode (Requires Transmission Tune & 180° Thermostat)

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:

• 2015+ Mopar Vehicles Require a PCM Unlock (Included in the Price). You must remove your PCM from your vehicle and ship your PCM to be unlocked (Shipping Label Included in Price) (Unlocking takes 1 business day once arrived). Once reinstalled, you can tune from your Underground Tuning Device!
• 2018+ Mopar Vehicles Require a Smart Access Cable to be installed. You will receive a Smart Access Cable with your Underground Tuning Device if your vehicle year is 2018 and newer.
• PCM Removal Video Link
• Smart Access Installation Link

STAGE TUNE REQUIREMENTS:

• Stage 1: Factory Headers & Factory Mid Pipes
• Stage 2: Aftermarket Headers or Cat-less Mid Pipes

Due to different mods, fuel, & conditions, Horsepower and Torque increases will vary.

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

110+HP | 70+TQ GAIN

HELLCAT POWER PACKAGE INCLUDES:

• Underground Tuning Device w/ Map Switching From Mobile Phone!
• Underground Power Pack Pulley
• 180 Degree Thermostat
  
• Engine Tune
• Transmission Tune
  
• PCM Unlock
• Smart Access Cable (2018+ Models)

OPTIONAL FEATURES:

• Burbles
  
• Advanced Burbles (Requires Stage 2)
• Super Burbles (Requires Stage 2)
• MDS Delete (Removes 4 Cylinder Mode)
• Multiple Octane Options (91 Octane & 93 Octane)
• Spare Unlocked PCM

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:

• 2015+ Mopar Vehicles Require a PCM Unlock (Included in the Price). You must remove your PCM from your vehicle and ship your PCM to be unlocked (Shipping Label Included in Price) (Unlocking takes 1 business day once arrived). Once reinstalled, you can tune from your Underground Tuning Device!
• 2018+ Mopar Vehicles Require a Smart Access Cable to be installed. You will receive a Smart Access Cable with your Underground Tuning Device if your vehicle year is 2018 and newer.
• PCM Removal Video Link
• Smart Access Installation Link

STAGE TUNE REQUIREMENTS:

• Stage 1: Factory Headers & Factory Mid Pipes
• Stage 2: Aftermarket Headers or Cat-less Mid Pipes

Due to different mods, fuel, & conditions, Horsepower and Torque increases will vary.

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

210+HP (E85) | 160+HP (PUMP GAS)

HELLCAT SUPER PACKAGE INCLUDES:

• Underground Tuning Device w/ Map Switching From Mobile Phone!
• Underground Super Pack Pulley
• Green Belt
• Custom Injectors
  
• Oil Catch Can
  
• 180 Degree Thermostat
  
• Engine Tune
  
• Transmission Tune
  
• PCM Unlock
• Smart Access Cable (2018+ Models)

HELLCAT SUPER PACK ATTACK INCLUDES:

• Boost A Pump
• E85 Tune

OPTIONAL FEATURES:

• Burbles
  
• Advanced Burbles (Requires Stage 2)
• Super Burbles (Requires Stage 2)
• MDS Delete (Removes 4 Cylinder Mode)
• Multiple Octane Options (91 Octane & 93 Octane)
• Spare Unlocked PCM

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:

• 2015+ Mopar Vehicles Require a PCM Unlock (Included in the Price). You must remove your PCM from your vehicle and ship your PCM to be unlocked (Shipping Label Included in Price) (Unlocking takes 1 business day once arrived). Once reinstalled, you can tune from your Underground Tuning Device!
• 2018+ Mopar Vehicles Require a Smart Access Cable to be installed. You will receive a Smart Access Cable with your Underground Tuning Device if your vehicle year is 2018 and newer.
• PCM Removal Video Link
• Smart Access Installation Link

STAGE TUNE REQUIREMENTS:

• Stage 1: Factory Headers & Factory Mid Pipes
• Stage 2: Aftermarket Headers or Cat-less Mid Pipes

Due to different mods, fuel, & conditions, Horsepower and Torque increases will vary.

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

350+HP (E85) | 160+HP (PUMP GAS)

HELLCAT HYPER PACK INCLUDES:

• Underground Tuning Device w/ Map Switching From Mobile Phone!
• Underground Hyper Pack Upper Pulley
• 10% Lower Pulley
• Green Belt
• Custom Injectors
  
• Oil Catch Can
  
• 180 Degree Thermostat
  
• Engine Tune
  
• Transmission Tune
  
• E85 Tune
• Upgraded Dual Fuel Pump
  
• Pinning of Crank
• PCM Unlock
• Smart Access Cable (2018+ Models)

HELLCAT HYPER PACK ATTACK INCLUDES:

• Jokerz Performance Ported Blower
• SDG Ported Snout
• 108mm Throttle Body
• Supercharger Spacer

OPTIONAL FEATURES:

• Burbles
  
• Advanced Burbles (Requires Stage 2)
• Super Burbles (Requires Stage 2)
  
• Multiple Octane Options (91 Octane & 93 Octane)
• Spare Unlocked PCM

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:

• 2015+ Mopar Vehicles Require a PCM Unlock (Included in the Price). You must remove your PCM from your vehicle and ship your PCM to be unlocked (Shipping Label Included in Price) (Unlocking takes 1 business day once arrived). Once reinstalled, you can tune from your Underground Tuning Device!
• 2018+ Mopar Vehicles Require a Smart Access Cable to be installed. You will receive a Smart Access Cable with your Underground Tuning Device if your vehicle year is 2018 and newer.
• PCM Removal Video Link
• Smart Access Installation Link

STAGE TUNE REQUIREMENTS:

• Stage 1: Factory Headers & Factory Mid Pipes
• Stage 2: Aftermarket Headers or Cat-less Mid Pipes

Due to different mods, fuel, & conditions, Horsepower and Torque increases will vary.