Exhaust wrapping dump pipe

I created this thread so it won't flood Manaz (Roberts) topic
What is recommended in a DIY tape heat install and suitable product?
And yes what are the benefits does it really make a difference to heat produced. I was under the impression that wrapping would keep heat in pipes making it hotter ?
Thanks
What is recommended in a DIY tape heat install and suitable product?
And yes what are the benefits does it really make a difference to heat produced. I was under the impression that wrapping would keep heat in pipes making it hotter ?
Thanks