I've personally seen my turbo manifold (just the manifold only, not a whole section) glowing like that in the dark, but not in the daylight like the above pictures. It scared me when I first noticed it, but then I got used to it. So I think the above engine should have put out a huge amount of power that produces too much heat. It's not in the case of the turbo engine because the turbo creates hotter combustion, more restrictive exhaust flow, thus increases the heat. It's not necessarily a turbo engine will give out the same amount of power as the bigger engine while both exhaust systems glow.