Retaining ideal spray pattern. I'm no expert, but if I understand correctly, for that to be accomplished the injector must be seated lower (hence the reason for machining the lower plenum). I haven't heard of any adverse effects from the Winfactory rails, and BDE is coming out with a version that doesn't require those modifications (at the cost of optimal spray pattern) to appeal to this target audience. It'd be cool to see some tests performed comparing the two but that'd require a lot of money and labor which I doubt anyone has the time/resources and lack of practicality to accomplish. IMO BDE's are more intricately engineered and I would not hesitate to trust it. I would wait for more feedback before pulling the trigger on the Winfactory's.
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