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There is more to it than most people think or know about. The shorter runner of a log manifold will produce more torque. The longer runner of a "equal length tubular" manifold will produce more power. The longer bend radius out of the head of a properly designed tubular manifold will benefit combustion chamber filling (scavenging) over a log style that has multiple collision areas. Tubular can have a much better entry angle into the turbo than the sharp 90 degree down turn of our log style. Further more, "equal length" does not necessarily mean that each pulse will be timed from flange to flange the same. The number of bends & the consistency of radius on those bends changes the end results, despite them being "equal length".
The picture of the SZ manifolds are still "log style" despite being "tubular" & the picture of the Greedy "tubular" manifolds are not equal length & do will not produce equal pulse durations.This is my properly designed tubular manifold for my EFR turbos:
~Induetime~ "Lag Less"
500WHP/533WTQ Stock Turbo World Record Holder
New track car project "Diseaze": |
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