For the most part, I have seen first hand what header wrap can do to a set of headers.
They will deteriorate (SP) the metal & cause them to fall apart after a while.
Other than that,they do really cool down the underhood temps.
I ran Clifford headers for years w/out headers wrap & had not run into problems with the intake causing the fuel to boil.
Cali weather,never needed a choke.
MBHD
