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Reply to "ROLL CALL: Jethot Coatings @ 500HP"

He said that extended dyno runs are the culprit because the car is stationary inside a small building with a couple of fans blowing on the radiator.  The dyno tuning was like one or two dozen drag races in succession and heat at the header openings keeps accumulating.  Again, most of the exhaust coating looked like new (much like the coating on your 180's) for many years.  Only a few inches of the header tubes near the cylinder head were dulled.

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