Grand Cherokee WK
Series/Engine 5.7L HEMI 5.7L HEMI 5.7L HEMI 4.7L 4.7L High Output 4.7L High Output
Part Numbers 538750; 3875 538750; 3875 538750; 3875 538750; 3875 538750; 3875 538750; 3875
CARB E.O. D-330-09 D-330-09 D-330-09 D-330-09 D-330-09 D-330-09
Model(s) 05 - 08 Grand Cherokee 2009 Grand Cherokee 2010 Grand Cherokee 05 - 07 Grand Cherokee 08 - 09 Grand Cherokee 2010 Grand Cherokee
Stock HP 330 HP 390 HP 390 HP 265 HP 305 HP 310 HP
Stock TQ 375 lb-ft 407 lb-ft 407 lb-ft 305 lb-ft 334 lb-ft 330 lb-ft
SC Perf. HP + 17.8 HP + 20.0 HP + 17.8 HP + 18.0 HP + 48.0 HP + 50.0 HP
SC Perf. TQ + 26.3 lb-ft + 28.0 lb-ft + 26.3 lb-ft + 20.5 lb-ft + 62.0 lb-ft + 55.0 lb-ft
93 Performance No No No No Yes Yes
91 Performance Yes Yes Yes Yes Yes Yes
87 Performance Yes Yes Yes Yes Yes Yes
Towing Yes Yes Yes Yes Yes No
Crawling Tune No No No No No No
SAVE Calibration Yes Yes Yes Yes Yes Yes
Transmission SC Optimized SC Optimized SC Optimized Auto Auto Auto
Wide Open Throttle Shift Points Yes Yes Yes Yes Yes Yes
Shift Firmness SC Optimized SC Optimized SC Optimized SC Optimized SC Optimized SC Optimized
Adjust Speed Limiter User Adjusted Yes Yes User Adjusted User Adjusted Yes
Adjust Rev Limiter User Adjusted Yes Yes User Adjusted User Adjusted Yes
Tire Size Calibration 22.5" - 42" 22.5" - 42" 22.5" - 42" 22.5" - 42" 22.5" - 42" 22.5" - 42"
Transfer Case Gear Calibration Yes Yes Yes Yes Yes Yes
Axle Gear Calibration Yes Yes Yes Yes Yes Yes
4WD-HI Axle Lock Yes Yes Yes No No No
Throttle Body Relearn Yes Yes Yes No No No
Real Time Idle Up Yes Yes Yes Yes Yes Yes
Fan Control No Yes Yes No Yes Yes
Spark Advance Set No No No No No No
Tire Pressure Monitoring System Threshold Adjust If vehicle equipped If vehicle equipped If vehicle equipped  If vehicle equipped   If vehicle equipped  If vehicle equipped
Read & Clear Trouble Codes Yes Yes Yes Yes Yes Yes
Multiple Superchips Tunes Included Yes Yes Yes Yes Yes Yes
Internet Updateable Yes Yes Yes Yes Yes Yes