Lets talk science, Stillen Gen3 Intake

Rusty · 11-02-2013, 07:11 PM

Quote:

Originally Posted by Honesty

The stock intake is not optimized for flow and only flow. It is designed to quiet the sound of intake air and to prevent the vehicle from sucking in water into the combustion chamber.

The reason why aftermarket cold air intakes increase horsepower (which is just flow) is because they have fewer restrictions and allow for a higher amount of cfms to come through the pipe than the factory snorkel/filter. One has a more focused purpose, which it accomplishes.

The length of the tube is overall the same or only slightly longer than the factory intake, but it is straighter, wider, and simpler. As a result, air flows through it more easily. Therefore the vacuum in front of the intake valves draws in more air.

Length isn't the ONLY factor here. The overall design of the factory intake is not optimized for flow. That's the problem.

Hey, someone who got it.

andre12031948 · 11-02-2013, 07:27 PM

Quote:

Originally Posted by Honesty

The stock intake is not optimized for flow and only flow. It is designed to quiet the sound of intake air and to prevent the vehicle from sucking in water into the combustion chamber.

The reason why aftermarket cold air intakes increase horsepower (which is just flow) is because they have fewer restrictions and allow for a higher amount of cfms to come through the pipe than the factory snorkel/filter. One has a more focused purpose, which it accomplishes.

The length of the tube is overall the same or only slightly longer than the factory intake, but it is straighter, wider, and simpler. As a result, air flows through it more easily. Therefore the vacuum in front of the intake valves draws in more air.

Length isn't the ONLY factor here. The overall design of the factory intake is not optimized for flow. That's the problem.

Not going to go into this or that. I just know that with the stock intakes you get ONLY the outside air, and it's somewhat under pressure from beneath the car. Also the stock tubing doesn't get anywhere as hot as the metal ones.

xxAGAVExx · 11-03-2013, 07:31 AM

That was breaking apart molecules, not destroying atoms, completely different. I breath in a mixture of oxygen and breath out carbon dioxide, doesn't mean I'm a walking nuclear power plant, which I think synolimit was referring to.

Sent from my iPhone using Tapatalk

Chuck33079 · 11-04-2013, 08:01 AM

It's from a stock turbo WRX. They peak well before redline.

Sh0velMan · 11-04-2013, 08:02 AM

Quote:

Originally Posted by Chuck33079

It's from a stock turbo WRX. They peak well before redline.

Like almost every factory turbo 4 banger...

After driving the Z a lot, my MS3 feels like driving a diesel in comparison.

Time to shift @ like 5500 lol.

Chuck33079 · 11-04-2013, 08:05 AM

Quote:

Originally Posted by Sh0velMan

Like almost every factory turbo 4 banger...

After driving the Z a lot, my MS3 feels like driving a diesel in comparison.

Time to shift @ like 5500 lol.

Yep. I'm still getting used to winding the tach out all the way, and I've put almost 20k on the Z.

Sh0velMan · 11-04-2013, 08:08 AM

Quote:

Originally Posted by Chuck33079

Yep. I'm still getting used to winding the tach out all the way, and I've put almost 20k on the Z.

Yeah. It takes a total recalibration of the "time to shift" part of the brain, for sure. Especially since (at least, while N/A) the torque curve is so smooth, there's not an obvious "fall off" to indicate you should be shifting soon. Also makes the car feel slow, when it really isn't.

I guess I should also further qualify my statement in saying:

Like almost every factory turbo 4 banger over 2 liters in displacement.

Since I know that there are 2.0 turbo cars that make 7 grand easy and I don't wanna get "called out" for not being 100% accurate. (Evo's, anything SR20DET equipped, the Genesis, etc)

lol.

MadChemist · 11-04-2013, 05:31 PM

We went from long tube cold air intake to FI systems. Slightly off topic

Rusty · 11-04-2013, 05:36 PM

Quote:

Originally Posted by MadChemist

We went from long tube cold air intake to FI systems. Slightly off topic

What was your first clue. LOL

11-03-2013, 07:31 AM	#3 (permalink)
xxAGAVExx A True Z Fanatic Join Date: Nov 2012 Location: Tampa Posts: 1,037 Drives: 09 370Z BLK M6 Rep Power: 53925	Lets talk science, Stillen Gen3 Intake That was breaking apart molecules, not destroying atoms, completely different. I breath in a mixture of oxygen and breath out carbon dioxide, doesn't mean I'm a walking nuclear power plant, which I think synolimit was referring to. Sent from my iPhone using Tapatalk Chuck33079 and luigi90210 like this. __________________ l 09/6MT l BP Twin Turbo Kit l E-85 w/Fuel Return l FI 18" Res CF CBE l Powertrix Ultra-Lite Coilovers l Wavetrac LSD \| Lots of SPL and Carbon Fiber \|

11-04-2013, 08:01 AM	#4 (permalink)
Chuck33079 A True Z Fanatic Join Date: Nov 2011 Location: Houston Posts: 12,265 Drives: 2011 370ztt Rep Power: 29539	It's from a stock turbo WRX. They peak well before redline. __________________ 2011 MB Touring-Sport-6sp-Nav/GTM TT/FI TT TDX/JTran/Kosmic/Eibach/Hotchkis/SPC/CSF/RPS/SoThatsWhereAllMyMoneyWent

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11-04-2013, 05:31 PM	#8 (permalink)
MadChemist Enthusiast Member Join Date: Sep 2012 Location: Florida Posts: 412 Drives: 2010 370ZR Rep Power: 13	We went from long tube cold air intake to FI systems. Slightly off topic