Exhaust manifold design

[Ruan]

Yes, on incredibly expensive, high performance applications where longevity isn't so much of a concern... Tubular manifolds are better, but in the real world, where cost, longevity and packaging is a concern... Log style manifolds are preferred...

I'm saying log manifolds are still a viable option, not that they're better... You don't HAVE to have a tubular, yes it's preferable, but it's not the be-all and end-all of manifold design...

IMHO anyway.