Originally posted by JEDsContour:
If I were going naturally aspirated I would do the split ports. The SVT manifold works well with this - and I like the looks of the stock SVT engine! It will also save effort with fuel line plumbing.
With a turbocharger, oval port all the way.
Not really. Shape of the manifold with turbocharging is less of an issue. I think both will work equally well especially since the air is forced. And in that case, everything you wrote above is still relevant.
Now IMRC isn't really an issue with the turbo so that could stay or go depending on how the turbo is sized, piping choices, etc.
Former owner of '99 CSVT - Silver #222/2760
356/334 wHP/TQ at 10psi on pump gas!
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'05 Volvo S40 Turbo 5 AWD with 6spd, Passion Red
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