Its the wrong type of heat control for the application. The header wrap is meant to retain heat in the manifolds. You do not want to keep heat in your intake system. Most companies have come to the market with reflective tape that helps prevent the piping from getting heat soaked from the engine bay temperatures. You can see some reflective heat tape
HERE. This would be the right stuff to wrap an intake with!
Thanks,
Alex Goodwin
AlexG@motionlabtuning.com