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

50+HP | 70+TQ GAIN

UNDERGROUND CHOP PACKAGE INCLUDES:

• Underground Tuning Device w/ Map Switching From Mobile Phone!
• Custom Underground Camshaft
• Installation (Please Call/Email to Book Your Installation)
• Hellcat Lifters
• Upgraded Pushrods
• Upgraded Valve Springs
  
• Full Gasket and Seal Replacements
  
• Engine Tune
• Transmission Tune
• Dyno Session
• 180 Degree Thermostat
  
• PCM Unlock
  
• Smart Access Cable (2018+ Models)

OPTIONAL FEATURES:

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

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

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.