im not sure but i think that piece focuses the light. Taking it off might scatter the light pattern?
2009 Jeep Grand Cherokee SRT Design
SRT Exterior,Magnaflow 14590 w/ SRT resonators,V2 CF Medic Hood,Injen Powerflow Intake,Flying Ryan Ported TB,Custom Painted Halo Headlights,HID lows/fogs,SRT Springs,Stillens,Gloss Black SRT Reps,Mopar Spoiler, Custom Painted Moldings with Snakeskin green
GC letterings, Mopar Stripe,Tinted LED
tails/rear fogs, TLS Harness,Switchbacks, Stage6
5" Tips,Custom Door Handle Leds,5% Tint,Altec Plate,HID Reverse,Mopar Front Emblem/ Rear Logo,Powerwire,Interior Leds,RGB LED cupholders,Mygig,Weathertech Mats,LXHarness Leds,Rear Cargo Light Mod,Lockpic V4,GlossBlack Vinyl Interior Pieces