This means you can set an output to switch on or off based on certain criteria

High RPM Capability: The solid lifters in this kit are built to handle higher RPM levels

which require no modification to the engine cover

ignition timing

and Closed-Loop Boost Control

S38CNC Cylinder Head Porting 64185-8-VV-55 This means you can set5150 AutoSport 5 Axis CNC Cylinder Head Porting for BMW S38 Engines Please note that price is based on customer providing disassembled, clean core. If you need help sourcing a core, please contact our sales team. This service includes a 1 2 week turnaround time for service completion, beginning when the 5150 Team receives your head. Investing in cylinder head porting for your BMW engine enhances airflow efficiency for improved engine power, throttle