G35 Coupe V35 2003 - 07 Discussion about the 1st Generation V35 G35 Coupe

Cold air crap?

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Old Jul 22, 2005 | 10:40 AM
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wilson1's Avatar
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Cold air crap?

Ok, what is the point of installing a cold air intake when the first thing your car does is heat it up when it hits the throttle body?

Is everyone bypassing the coolant around the throttle body? That 190 degree water certainly isn't helping your "cold" air much.
 
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Old Jul 22, 2005 | 10:44 AM
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Well, obviously the idea is have a colder start temp for the air. If you pass air of two different temperatures thru the throttle body, of course they won't have the same temp by detonation.

or, 'Warm air heated up, is hotter than cold air heated up'
 
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Old Jul 22, 2005 | 10:59 AM
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The cooler air is ingested into the engine much faster than it can warm up from the hot parts.
 
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Old Jul 22, 2005 | 12:14 PM
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I bypassed the throttle body coolant hose.
 
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Old Jul 22, 2005 | 12:22 PM
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The point is that your car sounds way better than stock. I don't think anyone on here is buying an intake for any other purpose.
 
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Old Jul 22, 2005 | 12:32 PM
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how do you bypass the TB coolant lines?

Is it a prett basic mod? some basic parts fromtthe auto parts shop, etc? any pics?

Thanks,

Andrew
 
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Old Jul 22, 2005 | 12:33 PM
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So with this same thinking an intercooler is pointless. Now seriously, the biggest point of the cold air intake is getting MORE AIR into the intake manifold.
 
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Old Jul 22, 2005 | 01:30 PM
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Ok, now we are getting somewhere. Lower pressure drop is a good reason to replace the air intake. Cooler sound, good reason as well.

Lets not call it a "cold air intake" since the factory design already does a good job of only getting outside air.

Yes the bypass is an easy mod. I am working on a design using a 3-way valve so I can easily swap it back and forth. I live in a relatively cold region and spring and fall can bring very cold temps. Fact is, most people who shell out the $300 for a CAI don't have a clue that their throttle body is heated.
 
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Old Jul 22, 2005 | 01:34 PM
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think about it. colder air will give u more air than warmer air even if both were in the same volumes. colder air becomes dense and more compact with air.
 
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Old Jul 22, 2005 | 01:44 PM
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Originally Posted by wilson1
Lets not call it a "cold air intake" since the factory design already does a good job of only getting outside air.
Kind of hard to not refer to a product by it's name, isn't it? Unless you can get all the companies to stop calling it a cai...
 
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Old Jul 22, 2005 | 02:20 PM
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Motordyne is makeing a new plenum spacer that will have a collant bypass with it. All it is a valvue that you can open when it's below 55 degrees and close it when it's above. You guys/gals might want to check into this. The bonus would be that you are getting the spacer as well.
 
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