# It's alive and way to close to my house

**URL:** <https://forums.speedlife.net/t/its-alive-and-way-to-close-to-my-house/31333>\
**Category:** NYSpeed Off Topic\
**Created:** [June 22, 2007, 12:19pm UTC](https://forums.speedlife.net/t/its-alive-and-way-to-close-to-my-house/31333 "2007-06-22T12:19:52Z")\
**Posts on this page:** 1\
**Showing post:** 185

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**Author:** ![Fry](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/fry/32/7284_2.png) [@Fry](https://forums.speedlife.net/u/Fry)\
**Post date:** [January 22, 2008, 12:13pm UTC](https://forums.speedlife.net/t/its-alive-and-way-to-close-to-my-house/31333/185 "2008-01-22T12:13:27Z")

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> [@cky89](#):
>
> The design actually offers more of a restriction than it does a gain. Someone on here or another forum actually figured out that it would take something like a few hundred of those to make any significant difference, and at that point the weight of them all would again hurt the power of the car.  
> FAIL. lol.

> [@discussion time](https://forums.speedlife.net/t/discussion-time/19352/3):
>
> OK lets do some rough calculations:
> 
> -lets say it’s a 2.5L motor spinning at a redline of 6500 RPM.  
> -It’s a 4 stroke so it passes those 2.5L 3250 times per minute  
> -That works out to 8125 Liters/Min  
> -But wait, they’re claiming 6 psi! So lets apply the ideal gas law to our air/fuel mixture  
> -8125_20.7=X_14.7  
> -X = 11,441 Standard Liters Per Minute of airflow, or 404 SCFM (404, isn’t that ironic? 404 gains not found.)
> 
> For comparison’s sake, a Toro Ultra Blower Vac 51598 leaf blower flows 385 CFM and requires 12A x 120V = 1440W. (Keep in mind this is an open-flow rating, at 6 PSI the power draw would be MUCH higher.)
> 
> [http://www.consumersearch.com/www/lawn\_and\_garden/leaf-blowers/comparisonchart.html](http://www.consumersearch.com/www/lawn_and_garden/leaf-blowers/comparisonchart.html)
> 
> -So we’ll linearly extrapolate to 404 SCFM. 385/404 = 1440/X  
> -X = 1511 Watts  
> 1511W/14.4V = 104 amps
> 
> That’s with the blower at open flow. With pressure built up to 6 psi, you’re probably looking at double or triple the power draw. Think your alternator can push 300 Amps?
> 
> Roughly.

:thankyou:

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