Originally Posted by Haywood
Guys, these do work. I put them on my SRT-8 and took the car on a road course. You can put your hand on the manifold after the run without leaving burning skin. Here is a thread from the 300c forum. Alot of the members there uses them. Obviously, different engines, but same principal.
http://www.300cforums.com/forums/per...light=Phenolic
Your test only shows that surface temp on the manifold has been decreased. How is your intake air temp compare pre and post install? How are your trap speeds on the drag strip pre & post install?