Here is ABT's view of the process, some background info to fuel the interesting galvanization/autophoretic debate, about which I am not qualified to comment...
http://www.abtproducts.com/wordpress/wp-content/uploads/2013/08/Auphoretic-Coating.pdfI wonder if the arp4 exhaust problem is one of radiant heat effecting our new coating? If it is the 800 series autophoretic coating it has a top limit of not much over 100°C.
How hot will the chassis be next to the cat?