LIP is correct. When you are heavy on the gas, (high boost), the exhaust manifold of your engine as well as the 'hot section' of your turbo may be red hot. No ceramic coating can withstand that heat. I witnessed this during a demonstration at Garrett/AirRearch turbocharger test facility 20 years ago. A Saab turbo engine was running an endurance test at 4,000 rpm, with an undetermined load on the engine. The exhaust manifold, hot section of the turbo, and 18 inches of the exhaust pipe were glowing cherry red. I try not to think of this when 'getting on' my turbo-lite. Jaguar used to use a ceramic coating on their exhaust headers, until catalytic converters raised exhaust tempratures so high it caused 'spider-web' cracking of the coating. 30 years as a jet engine mechanic (military fighters) gives me some insight into stuff that runs hot. Darrell
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