justin_o_guy2 wrote on 11/26/12 at 07:38:35:Im not talkin about just Any Ol 90* bits,, but the Drain Waste & Vent type, with the long sweeping bends,
Because such a design should be symetrical, the point at which the 2 are no longer separated, might be considered straight. The stock rubber ducky is about 2 diameter long and tapers as well. Good, sharp sectioning and joining of the 2 sweeping bends may provide the required length to straiten the air flow.
Diamond Jim did some great work with intake experiments.
EJID, there are some sweeping elbows that have a bigger bend radius. Typically used where things tend to get caught in the bend, especially during the half time of the super bowl. Those aren't much bigger than standard.