Originally Posted by scott howard
the cost would be high but no draw backs from doing it.
exhaust wrap will absorb water, oil and other fluids. which will in turn burn off from the exhaust heat....and with enough flammable stuff in there and you have a fire danger.
you can "seal" the exhaust wrap using silicone header wrap sealant...but it needs to be baked at ~400°F for some time after spraying... but you can't fit a full length downpipe in your kitchen oven...
btw, doing the whole thing in header wrap would be stupid expensive. cutting up a header blanket would be an alternative...