ATI ProCharger F-3R-112 Head Unit To F-3R-121 Head Unit Send-In Upgrade Service

This is an ATI / ProCharger F-3R-112 Headunit send-in service upgrading your head unit to the F-3R-121 head unit! This service is perfect for those looking to upgrade their current head unit. Note: This does not include the F-3R-112 head unit, this is a send-in service to upgrade your F-3R-112 head unit to the F-3R-121 headunit.
ProCharger F-3R-121 Upgrade Specs:
Maximum Supercharged HP Rating: 2,400 HP (Compared to the F-3R-112 Head unit 2100HP) 
Maximum Airflow: 3,100 cfm (Compared to the F-3R-112 Head unit 2,300 cfm) 
Maximum Boost: 40 psi (Compared to the F-3R-112 Head unit 38 psi) 
Inlet Diameter: 5.5 inches
Outlet Diameter: 4 inches
Maximum Impeller RPM: 72,000
Internal Step-up Ratio: 5.63:1
Self-Contained Oiling: Yes
Reverse Rotation Available: Yes