Nothing you really need to worry about with them. Need to keep the threaded holes where the screws that hold the MAF sensors in place install clean of powder, but thats about it. I coat for a couple different manufacturers of their own systems for different cars, some want the whole maf area masked, others just want the screw holes.
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NISSAN: 75 280Z / 86 300ZX GLL /87 Sentra SE / 03 350Z / 23 Z
Porsche: 93 968 / 23 Macan GTS / 93 968
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