hey everyone, after having my engine degreased and steam cleaned, i see that the high pressure steam these guys were using pretty much destroyed my already crumbling catalytic converter heat shield. is this thing really necessary? what it is shielding against? it looks like a bear to replace - any comments on that? thanks Andy Soma576@xxxx 1982 DeLorean DMC-12 VIN#11596 Fargo, ND 58102 [Non-text portions of this message have been removed]