Breath Better

[crazy2009]

VZ Calais 2005 Planning to remove the old air box and run a POD just behind the headlight. I did some testing by way off removing the shroud over the radiator taking out the air filter and found coniderable better response through the increase in airflow
Realising I have to run a filter of some sort thus going the POD

Anyone tried this setup and found any issues

More mods may well follow soon custom extractors with 2 1/2 twin out the back retaining the cats.

[ashbox]

you'll get a fair bit of hot air going into the pod so i wouldn't think there'd be much gain if any by putting a pod in.

if you do a search you should find a few people have asked this question before and recieved a few responses

[danja]

Suggest reading up on the "2 hole mod", might be what you're after - or at least a good place to start if you're going to rip out your airbox anyway.

VZ Alloytec 175 2 Hole mod

[impulsesv6]

2 hole mod!

with just the pod filter you may have issues with epa regulations about filter needing to be enclosed from the engine bay..... there is a pod filter and box setup usually on ebay

[crazy2009]

Hi guys

thannx for replies done the read up on the 2 hole setup. However after having taken out the air box there is a **** load of area all behind the headlight good clearance from the motor plus I have gotten a heat guard that protects the side that is nearest the motor. So alot of circulation pinned actually further away then original setup. Having looked at the 2 hole setup and aftermarket through eBay they all encase the filter and to me this really does not do alot more than the original setup.

My thinking and I maybe wrong is to give a much air around the POD setup as possible and this seems to be the way to go more free flowing air from not only behind the light but through the engine bay areas as a whole.

Well will let you know.

[Ewok]

2 hole mod and all will be good along with K&N filter, and for the record its "Breathe"

[danja]

Just bear in mind that Holden spent time and money making the air intake the way it is. I'm led to believe there is a large amount of positive air pressure which gives a mild amount of "boost" to the intake when the car is moving.

Making major changes can sometimes drop ponies rather than gaining them.

[crazy2009]

Previous car was a VX SS and when setting that up I was told K&N filter are little or no better than standard by a couple of guys but each to there own. I guess in my case proof in going to be in the eating and as I see no one has tried this way yet well no one on JC as far as I can see then I'll let you know.

When I just played with no filter and removed the shroud over the radiator it was alot responsive on Pick up / Throttle

[BANKS]

Just bear in mind that Holden spent time and money making the air intake the way it is. I'm led to believe there is a large amount of positive air pressure which gives a mild amount of "boost" to the intake when the car is moving.

Making major changes can sometimes drop ponies rather than gaining them.

Do you want to elaborate on that a bit more? Interested on your theory of the car getting "boost" while its going along...

An air filter slows the speed of the air, the engine regulates the amount of air that comes into it, not the pressure from the car moving.

If your doing 100k's and you had an exposed air filter, the pressure of the car going 100k's doesnt force the air up the intake, its slowed down by the filter and by the engine itself.

[crazy2009]

Just adding to this forum after reading another forum article I list this site VELOCITY AUTO :: AIRHAMMER AND aFe COLD AIR INDUCTION KITS, REPLACEMENT FILTERS AND MORE!! which is pretty much what I am setting up aside from the fancy heat guard $99.00!!! which I am going to use in place a chrome POD cover quarter the price.

[danja]

Do you want to elaborate on that a bit more? Interested on your theory of the car getting "boost" while its going along...

An air filter slows the speed of the air, the engine regulates the amount of air that comes into it, not the pressure from the car moving.

If your doing 100k's and you had an exposed air filter, the pressure of the car going 100k's doesnt force the air up the intake, its slowed down by the filter and by the engine itself.

Well to put it simply, as the car is moving it's displacing air. The air gets "squashed" briefly as the car hits it, creating positive pressure (boost). Negative pressure is created behind the car in the area it's moving from.

Certainly the filter and other intake components slow the air down, but there are still areas of high/low air pressure around the body of the car while it's in motion.

There is a good series of Autospeed articles on this topic:
Browser Warning (make sure you read all 5 pages)
and another more specifically about air intakes and pressure:
Browser Warning

[crazy2009]

Well after realising that getting a 90 degree pipe silicone or other for the 3.5 inch opening which seemed damm near impossible to get from Autobarn/supercheap & others I'm told mabe a special order I set up as in pic

Immediate notice is throttle response and under hard accelaration a growl not sure if much in horse power but for the throttle response and noticeable smother upshift pretty happy $29 POD filter $56 Adaptor $7.99 Sock for dust on POD filter Installation time 20 minutes. Have checked for engine heat exchange over 3 trips both local and on run and have to say little heatup the POD warm at best on the side nearest engine. Will setup a little neater on the bracket securing to block shortly.

Let me know what ya think