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Nice pics Geoff.
What's your idea on relative spool/power differences for a 6758 on a ported stock SR manifold vs. a 7163 on a Full-Race twin scroll manifold? Figure the usual cams on an SR20DET.
I'd think the 6758 would spool up a tad quicker due to the lower wheel inertia, and less manifold volume and shorter runners. Adding up to maybe 200-300 RPM? But I imagine there's a solid 50-70 rwhp difference up top with a higher flowing comp/turbine wheel combo plus better flowing turbo manifold.
Thoughts?
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