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Custom Liquid Nitrogen Cold Air Intake..pics to come soon...

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Old 04-08-2006, 04:46 PM
  #11  
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Default Spraying the IC isn't a very efficient way to cool the intake air. Think about what happens,

the spray comes out and is carried by the local airflow to the IC face. Right there the CO2 is cooling the outside air, not the stuff going into the engine. Once it reaches the IC it starts to cool the outer surface, which eventually will transfer to the inner surface getting cooler. The inner surface of the IC being cooler than the intake air is what will cool the intake air.

If you have something directly in the intake air path that is cool, it will be more effective at cooling that air. I see this on my car with IC sprayers and water injection. The water injection goes directly into the intake air and cools much more effectively than the IC sprayers can do.
Old 04-08-2006, 05:10 PM
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Default Drag racers have had amazing results with liquified gasses sprayed on the ICs.

At least some of it has to reach the IC metal in liquid form and boil from there or you're wasting your time.
Old 04-08-2006, 07:17 PM
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Default I'm sure every bit helps, but if the point is to cool the intake air as much as you can,

then it makes more sense to cool the air directly than to pass through another medium, metal in this case, before beginning the cooling. I was trying to make that point to the person who suggested that spraying the IC's with CO2 was the best way to cool the intake air. I'll ice down my IC's before a dyno pull if I can, every bit you can bring the temperature down helps.
Old 04-08-2006, 11:20 PM
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Default Thermodynamics says NO.

Your intake charge won't spend enough time in the cooling section to make any useful difference.
Old 04-09-2006, 05:18 AM
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my friend dynod before/after CO2 IC spray and he got 20whp from that alone. Sti
Old 04-09-2006, 06:10 AM
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looks like it'd screw with our MAF readings pretty horribly
Old 04-09-2006, 11:07 AM
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sup jacob....I need your services in the very near future =)
Old 04-09-2006, 01:57 PM
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just give me a shout
Old 04-09-2006, 03:02 PM
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Hmmmm what if you ran two of them post maf??
Old 04-09-2006, 04:43 PM
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Default Not sure if the whole setup will work..but why not use the IC Mister ECU from Autospeed..

conceptually it will be a good match.
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