Am not sure about how protective from fire it is....am sure its good since its main jobs are to lower the temps on the hood and deaden the sound.
Just take it off with out them knowing, there a 90/10 chance something will go wrong I say. $0.02
Yeah, T5.2 its -.3 better then the rest.
1989 900 SPG: Trionic 5(stg1), Aero seats, TD04-15G, 3" Turboback. SOLD
1993 9000 Aero: 3"Turboback, T5Suite Stg.3