I spray them with copper coat and use them. Yes you need to take them apart to clean them properly
I cleaned mine thoroughly but never use copper coat. I think you will be happier with the Cometics.
'63 Dodge 330 11.19 @ 121 mph Pump gas, n/a, through the mufflers on street tires with 3.54's. 3,600 lbs. 10.01 @ 133mph with a 250 shot of nitrous an a splash of race gas. 1.36 60 ft. 3,700 lbs.
