 Open on one end. I don't see any heat sink issues The ECU is sealed without any vents. My old ECU looked like it had a little moisture damage (albeit it lasted over 20 years) so I thought this might offer a little extra protection. Or is this a bad idea for some reason? Yeah, this is my z31, but I'd rather hear from youse guys and I don't know how to post pics on z31.com. Thanks.
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