Quote:
Originally Posted by armstrom
Can you elaborate a bit on how a header is built for forced induction? I understand the changes you would make for a turbo manifold (shorter runners for faster spool, divided/undivided flange, wastegate plumbing, etc...) but I've never heard such things applied to a supercharger build. My understanding is that generally superchargers will respond to exhaust mods in a similar way to NA.
-Matt
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As above, you design a manifold for the amount of exhaust gas flow. With forced induction there will be a greater volume of gas to get out the exhaust and thus the optimal design would take this into account. It is essentially what most aftermarket ones would do, hence they benefit N/A and FI but a design suited to a ~250bhp engine would not necessarily be optimal for one running +100bhp again. Is it likely to be a big gain, probably not but if you like to get every last bit of power then you could get one to fit your build.