The exhausts are stainless rather than chrome and will discolour with the heat even with non standard silencers. There are some chemical treatments that will take a lot of the hard work of getting them polished back to clean from the blued heat affected look. The surface left by the wrap might take a bit more effort. You might need several cases of beer if the plan is to sit down with a rag and a tub of Autosol!

Hi Calum, while I don't expect them to be chrome under the wrap but am I safe to say before the factory wrapped them that they will are slightly polished? I am aware of the blueing as the sports manifold from Williams I installed on the 4/4 did this but was clean metal at least, if that makes sense. Just dreading that I'm opening up a can of worms when taking this off but hope it's not so bad as it's not been driven much at all.
Cases of beer at the ready
