Love all this tech talk. Leaning heavy toward a TA style hood for kouki S14 front on my S13 vert.
I confess the reason was to lower the engine bay temps a bit. I do have my downpipe wrapped with DEI mummy material and a turbo blanket. The 1JZ is so long and my bay small that the dual electric fans fit one centimeter from the serpentine belt and I can't run a radiator shroud nor properly duct the waste post-radiator air up and out. My thought was that the low pressure area behind the rad would draw
some warm air out. I do also like the look.