Volant cold air intake system

[2uzrunner03]

all I was trying to say is that I think that if the air has to make 2 90 degree turns, that it might slow it down,,,,,,,,,,,,thats all

PVC - Equivalent Length Friction Loss in Fittings

So let's say the intake is 3" in diameter. That means each 90 turn is equivalent to 11ft of straight pipe, and to the best of my memory the factory intakes 90's were flexible pipe with large ribs which would create even more drag.

 

[kraftwerkauto]

s1148.photobucket.com/albums/o572/cimahar/?action=view&current=Image_001.jpg

 

[Duhockey]

Well, I dont know about the Volant... but K&N does their own dynos to prove both HP and Torque gain.

http://www.knfilters.com/dynocharts/63-9029_dyno.pdf

I think the torque is more noticeable than the actual HP gain.

Someone above had an analogy of two straws, one bent and one not. Thats an ok analogy, but the truth behind a CAI over a stock intake is a few things

1st of all, the CAI is much wider in diameter from start to finish. The stock airbox brings air in thru a much smaller diameter tube (dont have the runner in front of me to measure right now) Take a Straw, suck air thru that and then take a pvc pipe and suck thru that, which one lets more air thru more easily?

2nd, the temperature of the air matters. Your stock air tubes are softer less heat resistant plastic tube... The CAI are made of way thicker, heat resistant tubing which allows the air to be colder after traveling thru the hot engine bay. Its not necessarily how hot the air is at the filter, its how hot the air is at the Intake manifold (hence why meth/water injections can cool down intake temps and increase hp and torque in turbo and Supercharged applications)

If anything the only true argument Ive heard is that the K&N and other filters like it allow small particles thru, this is somewhat/partially true although Ive run K&N cone filters on every single car Ive owned for the last 15 or so including 10 straight years on my 96 4runner and never had an issue. Overoiling can be a bigger problem but thats user error.

Ill pay 240$ for the extra 12 hp and 12lbs of torque and associated fuel economy that the K&N provide.
Amazon.com: K&N 63-9029 Air Charger: Automotive

Also, dont forget, you are paying 20$ or so everytime you replace a stock air filter...

2007 TOYOTA 4RUNNER Parts - ToyotaPartSales.com

I dont remember how often you have to replace those, but 12 of those is 1 CAI... over 10 years how many air filters will you buy??

 

[rebelbowtie]

Read my link, you aren't getting 12hp gains from a CAI

 

[RonMAIDEN]

With the 3rd gen cutting a hole in the airbox nets the same whp results as the $200+ K&N so it's another bad bang for the buck mod.

Dyno

 

[NJshadow93]

Well, I dont know about the Volant... but K&N does their own dynos to prove both HP and Torque gain.

http://www.knfilters.com/dynocharts/63-9029_dyno.pdf

I think the torque is more noticeable than the actual HP gain.

Someone above had an analogy of two straws, one bent and one not. Thats an ok analogy, but the truth behind a CAI over a stock intake is a few things

1st of all, the CAI is much wider in diameter from start to finish. The stock airbox brings air in thru a much smaller diameter tube (dont have the runner in front of me to measure right now) Take a Straw, suck air thru that and then take a pvc pipe and suck thru that, which one lets more air thru more easily?

2nd, the temperature of the air matters. Your stock air tubes are softer less heat resistant plastic tube... The CAI are made of way thicker, heat resistant tubing which allows the air to be colder after traveling thru the hot engine bay. Its not necessarily how hot the air is at the filter, its how hot the air is at the Intake manifold (hence why meth/water injections can cool down intake temps and increase hp and torque in turbo and Supercharged applications)

If anything the only true argument Ive heard is that the K&N and other filters like it allow small particles thru, this is somewhat/partially true although Ive run K&N cone filters on every single car Ive owned for the last 15 or so including 10 straight years on my 96 4runner and never had an issue. Overoiling can be a bigger problem but thats user error.

Ill pay 240$ for the extra 12 hp and 12lbs of torque and associated fuel economy that the K&N provide.
Amazon.com: K&N 63-9029 Air Charger: Automotive

Also, dont forget, you are paying 20$ or so everytime you replace a stock air filter...

2007 TOYOTA 4RUNNER Parts - ToyotaPartSales.com

I dont remember how often you have to replace those, but 12 of those is 1 CAI... over 10 years how many air filters will you buy??

Your analogy of straw vs. PVC pipe doesn't really apply in this case. The OP closed up the other holes in the box so the Volant pulls air from the same exact hole that the factory intake pulls from. Basically, the same amount of air either way.

 

[SkylineGTRracer]

It will always depend on what the overall goal is for the vehicle. For most of the people on this forum the factory system is more than adequate. Plus the air intake is one thing, to maximize the gain that comes with a well engineered system needs to involve tuning to maximize the change in the volumetric efficiency. The thing to look for in any intake, is how the intake changed the intake temps. Theres alot more involved like maf placement, volume, materials, etc but I don't feel like getting into that.

 

[Duhockey]

Your analogy of straw vs. PVC pipe doesn't really apply in this case. The OP closed up the other holes in the box so the Volant pulls air from the same exact hole that the factory intake pulls from. Basically, the same amount of air either way.

oh, well, the design of the Volant is completely different than a true CAI then... the K&N (the example) I used, pulls a ton more CFM than a stock airbox.

 

[rebelbowtie]

oh, well, the design of the Volant is completely different than a true CAI then... the K&N (the example) I used, pulls a ton more CFM than a stock airbox.

K&N example you used is biased, the same can be said for any product in the industry. flowmaster claims HP/TQ gains from their mufflers but in certain private test performed on a dyno actually showed a loss of HP/TQ from the control.

if you understand how a throttle body works then you understand that any gains from a CAI (which mind you are extremely minuscule) are only at WOT. any time you arent driving at WOT you are not getting any benefits from a CAI. also any CAI that uses an aluminum intake tube are prone to heat soak and i have first hand experience with this and heat kills power.

 

[Whitebeauty]

This is what i did to get more cold air in...u can find this picture in my album if u need a better view

 

[kkz]

I tend not to get involved whenever this topic comes up, since it always involves bickering. I got my intake because I plan to combine it with headers/exhaust. Not really for the power gain. I'm trying to get the function of something like loud pipes on a motorcycle. Having drivers like the ones around here, its necessary. Besides, I needed a filter change anyway.

 

[RonMAIDEN]

Headers are even a worse bang for the buck mod and won't do anything for making "noise". Just do a louder exhaust and save your $$$.