So far I have found out that the upgrades are as follows
Sequential Triple Injection under heavy engine load
Variable Cam Timing
Reinforced Starter Motor
Updated Twin Scroll Fixed Geometry Turbo (RCZRs)
Diamond (DLC) Coated Bearings & key components
Graphite Coated Pistons
Larger Air Intake
Direct Injection
Revised Emgine Management & Ventilation
I'm not sure about it all but let me know
Sequential Triple Injection under heavy engine load
Variable Cam Timing
Reinforced Starter Motor
Updated Twin Scroll Fixed Geometry Turbo (RCZRs)
Diamond (DLC) Coated Bearings & key components
Graphite Coated Pistons
Larger Air Intake
Direct Injection
Revised Emgine Management & Ventilation
I'm not sure about it all but let me know