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SVTPerformance's Chain of Restaurants
The Blower Bistro
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<blockquote data-quote="SecondhandSnake" data-source="post: 16596102" data-attributes="member: 116684"><p>I don't have any hard data I can share but generally think of it this way- your power adder (whether it's a blower or turbo) is all about pressure ratios and efficiencies. Pressure ratio is outlet pressure over inlet pressure (in absolute.) As you restrict your inlet, your inlet pressure drops. If you keep your pressure ratio fixed (likely with a mechanical blower), that means your outlet pressure will be lower as well.</p><p></p><p>Of course as to whether it impacts it appreciably depends on the flow rating/curve of the filter. If you're way over the intended limit, you could have pretty high restriction and it will impact boost. If you're not exceeding it, then you won't really see an impact. Unfortunately not a lot of filter manufacturers publish flow numbers, and they can vary wildly based on filter material and test conditions.</p></blockquote><p></p>
[QUOTE="SecondhandSnake, post: 16596102, member: 116684"] I don't have any hard data I can share but generally think of it this way- your power adder (whether it's a blower or turbo) is all about pressure ratios and efficiencies. Pressure ratio is outlet pressure over inlet pressure (in absolute.) As you restrict your inlet, your inlet pressure drops. If you keep your pressure ratio fixed (likely with a mechanical blower), that means your outlet pressure will be lower as well. Of course as to whether it impacts it appreciably depends on the flow rating/curve of the filter. If you're way over the intended limit, you could have pretty high restriction and it will impact boost. If you're not exceeding it, then you won't really see an impact. Unfortunately not a lot of filter manufacturers publish flow numbers, and they can vary wildly based on filter material and test conditions. [/QUOTE]
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