[classicauto]

a) Heat wrap won't destory a downpipe. If its a mild steel pipe, sure over 5-6years of use the wrap will hold more contaminants against it........but destory no. You should be using SS anyways since the extra cost is worth it for indestructibility.

b) Ceramic coating DOES NOT do as good a job as heat wrap 1 for 1. Comparing costs, ceramic coating gets even further behind the wrap because it costs heaps more.

c) Ceramic coating can't be transferred. You can however unwrap a downpipe/manifold and re-wrap a new one, you just lose a few bits of fiber during the process.

d) They both do their jobs, but the purpose here depends on your goal. If its exhaust you're talking about, and you want to keep the heat in there and not the engine bay - you're insulating. If you think about it as insulation - what is going to have a higher R vaule? 3-4mils of a ceramic coating, or 45mils (single layer) of wrap?