are we talking about the metal 'armor' under the oil filter?
uh, id leave that on, you know, bc there is debris int he road, driving behid a dumptruck droping pebbles ont he freeway, etc
there IS the potential for damage to occur there, worst case scenario; a small rock pops up just right and punches a hole in the top of your oil filter, not likely, but it could happen, then bam, no oil pressure, and all your oil os on the freeway rather than your motor
im just sayin
Dustin - 2004 XE V6 2wd; 3" SL, 2" BL, 33x12.5" ATs, HooHaa Steering, Idler arm Brace, 5% tint, Bilstein HD shocks, SAW Tbars, 1/2" ball joint spacers, piaa, HD Tbar anchors, B&M Tranny Cooler Stock Intake Mod, blacked out plastics/wheels/rack