pics would help.
you can't 'resurface’ that material you will have to buy a replacement cover
Garage Queen: 2005 Audi S4 4.2L V8, Vortech Supercharger, Vented CF Hood, PSS9 Coilovers, Sway-bars, RS4 brakes, Fast Intentions - Cat-less Downpipes & Cat-back Exhaust, 550hp
Daily Driver: E92 335i: JB4 G5 ISO27.5 w/BMS Flash, quaife LSD, BMS Meth, AA sport IC, BMS Charge Pipe, BMS OCC, Euro Light Switch, M-Sport Kit, LEDs everywhere. 12.1@117mph (stock intake stock exhaust, 225ís RFT)