Cool air pipe to pod?!

[quincy777]

Searching the threads only seems to find confusion of different opinions and theory's.

I am wanting to know from anyone who has done it, does it make any worth while difference placing say a 3 inch pipe to take air to your pod.

When I replaced standard airbox with pod, I could notice the difference - I guess wondering if it is worth the bother?

Car is r32 gtst, 3inch exhaust, Apexi FMIC, rb25 turbo.

thanks

[2BNVS]

hey mate, i just got some flexible tubing from hardware store and joined it from the front bar behind the mesh to the hole from my stock cooler return pipe so the air rushes straight into the cai box/pod...

cost about $5 so if u have a box around ur pod already then might as well do it...

ben...

[R31Nismoid]

Searching the threads only seems to find confusion of different opinions and theory's.

I am wanting to know from anyone who has done it, does it make any worth while difference placing say a 3 inch pipe to take air to your pod.

i would honestly doubt there would be any confusion at all.

A decent Pod with proper CAI is the best option, always has, always will

[Driver]

This is what i did with my r34

when i put the hybrid cooler kit on i had the factoy cooler hole still left next to where the pod is so i just got sum joins from bunnings and cut the end of a funnel and stuk it all together so all the air when straight into the box

[dangerous_daveo]

Worked a treat on my car, noticable difference.

[Sydneykid]

This is a post from the Stagea section, it is relevant in that it shows what sort of temperature you get at the air filter. Note that for every 8 degrees celsius uncrease in inlet air temperature you can loose as much as 5% in horsepower. So 61 degrees minus 32 degree = 29 degrees more than ambient. That's around 17% loss of horsepower...................

Everday I had time it wasn't hot, but yesterday was a ripper 30+ degrees and I was driving around in traffic and on the freeway.

Stagea air snorkel scoop temperature test.

The Ambient Temperature (AT) sensor was placed in the air stream just behind the grill.

The Air Filter Temperature (AFT) sensor was placed on top of the air filter in the standard airbox.

The testing process was;

1. I parked the car facing the sun for 2 hours.

2. I then drove at 50 kph max without stopping for 1 minute

3. I then drove at 70 kph max without slowing/stopping much for 5 minutes

4. I stopped with cars around, at the traffic lights & checked the temps just before I drove off

5. I checked the temps again after 10 seconds of driving

6. I then drove for 10 minutes at up to 110 kph, these are the minimum temps I saw

7. I then drove around a parking lot very slowly for 1 minute and checked the temps as soon as I stopped

Test AT.... AFT

1... 33.7... 64.5

2... 32.5... 40.3

3... 31.8... 35.4

4... 32.5... 61.4

5... 32.8... 52.5

6... 31.8... 33.2

7... 32.2... 55.0

My observations on the results;

Anybody who thinks its OK to have a POD with no heat shield and no ambient air feed needs to read this.

I was measuring the temperature of the air itself, not the temperature of the things that the air goes through/around. Just because the airbox itself is hot, doesn't mean the air inside it is equally as hot.

It doesn't take very long for the air to heat up, but it takes a lot longer for it to cool down.

I am satisfied that the scoop design works as intended

Pictures

The first is the temperature sensor probe inside the airbox

The second is the ambient air temperature sensor probe, I taped it behind the grill during the tests

The third is the temp displays themselves, they are handy things to have, cost ~$35 each from Jaycar. They don't react super quickly to temperature changes, the probes are quite large, they take a little bit of time to cool down themselves. So I think the actuals results of test 5 are quite a bit better than what the gauge showed.

Hope this is of some help:cheers:

[Bass Junky]

SK you are a constant source of excellent information.

[lukits01]

Okay Im convinced

Question is, suppose I make a CAI box for my pod filter

How big should it be and how would I feed it cold air?

The problem with some cars (like mine) is I cant use the standard box or the snorkel anymore due to aftermarket intercooler piping

Is it enough to feed the CAI box from the factory cooler hole? like wat 2BNVS and Driver has done? Maybe enlarge the hole?

I dont want to lose power because a CAI box is too restrictive

[rd-runr]

What Driver has done seems like the best option. The bigger the hole and air feed the better.

[2BNVS]

yep, like i said best to just get the flexible tubing (although i didnt use the funnel thing like driver) connect it behine the mesh so the air gets collected and travels up to where the end of the tube it conected to the original cooler pipe hole where it then travels up straight to the pod...the whole is 3" and so is the tubing...

ben...

[redline2003]

Just curious as to what airbox Driver has installed of his car, custom or aftermarket??