Just installed air intake on 1.5L!

[1.5]

Originally Posted by RedRide

If that is true, there should be a spectacular difference in performace between suimmr and winter temps.

Yes, there is some slight difference between drivng in 90 degree temps vs sub freezing temps. However, the diffence in intake temps (stock vs CAI) is insignificant as far as this is concerned.
"A few HP gain" just because you lowered the intake temps a few degrees? I don't think so.

Like I said.... when a car is moving all intakes are fed cooler air!
When a car is not moving, which intake do you think would be fed the coolest air..... A short ram the has its intake next to/ on top of the engine or, a stock air box that his its intake right bebind the grill?

There is absolutely a difference between cold days and warm. I can definately notice a difference.

And a CAI would move the coldest air into the intake manifold at a stop.

[RedRide]

....And a CAI would move the coldest air into the intake manifold at a stop.

Can you explain the physics that can support that claim?
A CIA in a wheel well, etc vs a a stock airbox getting fresh air in front of the engine at the griil..........

Even a stock air box benefits from winter temps vs summer.

BTW it must get really cold in Tampa

[1.5]

Originally Posted by RedRide

Can you explain the physics that can support that claim?
A CIA in a wheel well, etc vs a a stock airbox getting fresh air in front of the engine at the griil..........

Even a stock air box benefits from winter temps vs summer.

BTW it must get really cold in Tampa

Its CAI but yes the cold air sits the closest to the ground out of your options. Hot air rises cold air drops.

Yes it can get into the low 20s during the winters which is plenty to notice a difference in performance.

[cali yaris]

My position is that once a car is moving, any intake ,stock or otherwise, will be sucking in cooler air.

Your position is incorrect.

Does anyone seriously think that a simple plastic shield will prevent the transfer of hot engine air when the car is standing still?

A COLD AIR INTAKE (CAI, already distinguished from a short ram) draws air from the wheel well NOT the engine bay.

do you really believe that that one way they tuned it is to restrict intake air flow?

Yes. Open up the intake manifold and study the baffling, as some of us have.
Lots of intentional, engineer-designed restriction for intake air flow.

You argue from theory -- it may sound right, but it isn't.
But hey, it's clear this thread and the real-world information in it won't change your mind.
So let's leave it at agreeing to disagree. That's what I'm going to do. //out

[ilikerice]

Ok, so I finally got around to taking pictures of my dyno results from 2010. I figured Id post them here being that we are on the topic of CAI

Keep in mind that the Runfile2 was done about 30 mins after the CAI was installed, so the 92 whp is not accurate. When I saw that I was like , 5-6Whp was actually kinda impressive to me on just a CAI. Thanks to my tuner for being watchful said my engine temps were not alot lower then the original run. So we let it warm up for a min and ran it again.. That would be the RunFile3.

Also, this is just a CAI upgrade only.. no exhaust upgrades at all.. I am sure if I were to open up the exhaust that there will be a larger gain.

First dyno was the DynoDynamics as you can see..

[RedRide]

Agin you did not run a dyno test with the stock air box while just removing the stock restrictive paper filter for comparison.

This reminde me of a story.......
A man goes to a "witch doctor" for a headache.
The "doctor" recites some ancient chants, nails a frog to a tree and tells the man to take a couple of asprins.

The next day, the man returns and tells the "doctor" " you nailing that frog to the tree cured my headache!

[1.5]

Originally Posted by RedRide

Agin you did not run a dyno test with the stock air box while just removing the stock restrictive paper filter for comparison.

This reminde me of a story.......
A man goes to a "witch doctor" for a headache.
The "doctor" recites some ancient chants, nails a frog to a tree and tells the man to take a couple of asprins.

The next day, the man returns and tells the "doctor" " you nailing that frog to the tree cured my headache!

what are trying to say, am i supposed to be nailing frogs to my intake?

[RedRide]

^
you're kidding..... right?

[matthewai]

Originally Posted by cali yaris

@ matthewai: yes, more airflow is always helpful in general. I have a K&N on my wife's Prius and, while I haven't dyno'd it, I swear it feels a little peppier (anything does on that car, lol)

haha thank you

[cali yaris]

do you really believe that that one way they tuned it is to restrict intake air flow?

Yes. Open up the intake manifold and study the baffling, as some of us have.
Lots of intentional, engineer-designed restriction for intake air flow.

Still going to argue this point as well?

[RedRide]

Originally Posted by cali yaris

Still going to argue this point as well?

Do you know exctly how much that might hinder performance?
It's my understanding that some have removed it and did not get any worthwhile gains.
In any event, that can be easily removed if it is a conern to anyone

BTW, it takes two to ....... disagree.

[ilikerice]

Originally Posted by RedRide

Agin you did not run a dyno test with the stock air box while just removing the stock restrictive paper filter for comparison.

lol.. no I didnt, being this was back in 2010 and I only paid for 2 runs.. again, he threw the 3rd run in because he felt the 2nd one was inaccurate and didnt want me walking away with false information to share to all my ricer buddies.