Header flange/ header build

nm9stheham said

Any reason to not just use the stock manifold and route a tube from that back up into your turbo? I think Pishta posted a good pix of a setup like that.

If new, then the thicker flange you linked is desirable to fight the warpage of the heat in a turbo manifold, but I am very doubtful about routing the intake through that same super hot flange. The 2nd one looks on the thin side....IMHO.

Click to expand...

It has never been proved, but the thinking on that M-O is that the stock exhaust manifold + a J-Pipe (ala, PISHTA) is somewhat restrictive, compared with a 6-pipe header with invidual pipes for each cylinder.

Popular opinion states that the PISHTA system is good, up to, maybe, 350 horsepower, while there are a couple of 6-pipe headres can go over 500.

So, a PISHTA system could work well on the street, while a racing operation might opt for the bona fide headers, for a competitive advantage.