Not Ranked
Whaler,
It's really hard to believe that JetHot or any ceramic coating will reduce under-hood temperatures by 200 degrees. Maybe 20 to 50 degrees but not 200. My own personal experience is as follows; my headers were originally wrapped and in general I wouldn't overheat unless my coolant was low (another story). I unwrapped the headers because I didn't want to rust them out and had them JetHot coated. Now my hood temp is higher. I can idle all day with the hood open but 10 minutes with the hood closed and I'm spewing coolant out the overflow. It's only my experience but I don't think JetHot was a thermal improvement over wrapping. I does look much nicer though.
Jack
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