That’s some good gains - area under the graph - especially the torque lift. It really hangs on at the top.

Defo getting flow restriction.

There’s a chap on YouTube who did loads of flow analysis on those curved style long runner intake manifolds.

He was specifically looking at the way the air density impacted flow on the inner and outer walls and seeing what could be done to optimise it.

He looked at making the air tumble or spiral in order to stop it overloading (sorry my technical term) the outer radius of the bend and detach from the inner radius.

If I read your graph right - that’s 2000rpm’s worth of 160-170 ftlb

Last edited by cerealsurfer; 22/06/26 06:57 AM.
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