With the passage setup in the Steed manifolds I don't think it's hardly fair to call them a log manifold, they are very well designed.
As for the tubular header in theory not spooling as well because of considerably higher internal volume. . .I've heard that argument quite a bit on header threads. If you really think about it that is a nonfactor. With the exhaust gas volume exiting the engine even at idle and zero boost the volume difference between the two manifold styles is made up for in milliseconds. The difference is miniscule compared to the charge air side of the system since you have a lot of volume between the turbo and intake because of the distance and the CAC.
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1998 24v club cab SWB 2wd, GT37R Stage 3, tubular header, Pusher intake, Jammer Is
1996 Ram 2500 CC 4x4, 5-speed, DDP injectors, HX35/40 hybrid. 469,244 mile daily driver
Last edited by VMacKenzie; 01-21-2015 at 11:27 PM.
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