Icarus said:Heatwrap is an ideal way to make sure your car properly burns should you ever have an underbonnet fire.
The stuff is lethal which is why its use has decreased so much in motorsport since ceramic coating technology became affordable in club and semi-pro. Heat wrap holds any lose fluid such as oil directly on the hottest component in the engine bay and once it's on fire acts like a wick to keep it burning.
For every handfull of fires bet theres many thousands of others who have never had a problem.
I did mine a few years back, took it off last year as it was breaking up. Zero performance difference.
Bagged it up and burnt it on a bonfire and it didnt act like a wick and it didnt burn very easily although that was it bare.
Maybe theres a increased risk if its budget stuff?