[camppain]

now ive been wondering this as of late with the new maximas and some of the later model quests and other car makes they have a plastic intake plenum. now when you think abou tthis plastic would be more smoother compared to metal. (in the case the plastic is smooth vs stock non ported manifolds) it would also be lighter.

my question is can this be done on an exhaust turbo manifold? would it be any better besides that it would be lighter and more free flowing? would the pressure in a turbo system not allow you to use this?

anyone got insights or anything to add?