Jamie, constructively, on a 300bhp RST with a standard Manifold, what characteristics would you expect by switching to a tubular manifold? More/Less lag? More top end power?

Serious question.

When we fit a tubular manifold to a standard 'ish 200SX, they become dull and lacking in torque. At 250-300bhp, we fit a standard manifold by choice on those, where possible. Different car I know.