Comp Cams TOOL, GM CAM PHASER Data Logger Compatible and most importantly

and most importantly

Crafted with precision

Fits T4 Twin Scroll turbos

The textured finish looks matte — will I need to prep or paint these before installing

- H1 high and low beam bulbs included

Comp Cams TOOL, GM CAM PHASER Data Logger Compatible and most importantlyGM Gen IV VVT Cam Phaser Limiter Tool Cam phasers are specially designed, computer controlled cam gears that automatically optimize camshaft timing based on the current engine rpm. Currently they are used in all 2005 and newer Ford Modular 3 Valve and all 2007 and newer GM L92 engines. Engine oil is pressure fed to the cam phasers through a series of passageways in the cylinder heads and camshafts. The engine computers control solenoids that adjust