Pipercross are filter

#1 03-01-2004, 08:16 AM

Hi,

I'd like to know if some one already tried to install a PiperCross Vector air system on a SVX, if yes what the fuel consumtion become .......

The pipercross system is below :
http://www.performanceairfilters.com/main.html

Thanks

immortal_suby · #2 03-01-2004, 05:14 PM

First time I have seen or heard of it. It looks like an interesting concept. The flexible hose would make it pretty easy to locate the filter where you need it.

Mr. Pockets · #3 03-01-2004, 06:09 PM

Before I move this thread to the mod forum, I'd like to say that the copy on that site is total garbage.

"The unique design of the filter cone and the inlet 'tune' the moving air flow to increase its speed and therefore its pressure maximising the laminar air flow into the engine, again resulting in increased power."

I don't even know where to start...

They must know this product is bogus - they actually call their filter 'reverse flow technology,' which makes sense since they get Bernoulli's principle backwards in their ad copy.

Landshark · #4 03-01-2004, 08:14 PM

add a Tornado device to that, and .... Whoa! you might need a parachute on the back!

Mr. Pockets · #5 03-01-2004, 08:31 PM

Quote:

Originally posted by Landshark
add a Tornado device to that...

Oh, don't even get me started on those...

Ron Mummert · #6 03-01-2004, 10:02 PM

The flexible hose would make it pretty easy to locate the filter where you need it. [/B][/QUOTE]

Yes, & I especially like the hose with the garter system attached.

Ron (who cares if it works, I like the feel of it).

Amazonparrot · #7 03-02-2004, 07:50 AM

In my opinion, albiet an inexperienced one, it seems that despite all their technobabble trying to "fluff" the product...the ability to get more direct airflow from the flexible hose, like putting it somewhere near the airdam, seems like a valuble enough property of the item. Right?

-Andrew

Mr. Pockets · #8 03-02-2004, 07:55 AM

Quote:

Originally posted by Amazonparrot
In my opinion, albiet an inexperienced one, it seems that despite all their technobabble trying to "fluff" the product...the ability to get more direct airflow from the flexible hose, like putting it somewhere near the airdam, seems like a valuble enough property of the item. Right?

-Andrew

You're probably right about that, but their tubing dosn't look like anything special. And since their 'reverse flow filter technology' is crap, you might as well skip the whole thing andd use dryer tubing if you want to 'relocate' your air intake for some weird reason.

James Scott · #9 03-02-2004, 06:51 PM

Wanna buy a Tooooooooornaaaaaaaaaaaadooooooooooo! (cheap)

I had to take it out. . . . . . . . I almost snapped my neck from the added "reverse flow technology thrust"!

mikecg · #10 03-02-2004, 10:03 PM

I likes the models!!!
I straightened out my factory intake using a hacksaw and some creative enginering (read as Duct tape), and installed a K&N Drop in filter. I imagine it workes just as good. When I straigtened the stock on out I angled it toward the radiater a little. I noticed a gap between the bumper and the radiater that allows fresh air to get into the fender well.

Myxalplyx · #11 03-03-2004, 08:50 PM

I remember Rallispec used to sell intakes with the Pipercross air filter to the 2.5RS crown. I have a Pipercross panel air filter in my Outback Sport that I've had for ages. It was just sitting in my basement until earlier this year when I uninstalled a previous mod. Doesn't seem like anything special (the panel air filter) but it doesn't seem to hurt.

I like the idea of the air filter being closed off from the engine bay. Since it's closed off, it better be a BIG air filter since the SVX can swallow some air.....stock. Otherwise, it'd be a waste of $$$.

Anyone???------->

UberRoo · #12 03-03-2004, 11:16 PM

I think Subaru can be trusted to design an effective intake. Ever notice how it kinda resembles the intakes on, oh I don't know, say, every single modern car built today? I think if there were extra performance hidden in a better intake, the Subaru engineers would have found it. ...but what do they know?

Myxalplyx · #13 03-04-2004, 07:39 AM

Quote:

Originally posted by UberRoo
I think Subaru can be trusted to design an effective intake. Ever notice how it kinda resembles the intakes on, oh I don't know, say, every single modern car built today? I think if there were extra performance hidden in a better intake, the Subaru engineers would have found it. ...but what do they know?

Actually I agree with you. The only way people are going to know is to test different intakes out. Engineers are always making compromises when it comes to cars. I wouldn't be surprised if the compromise in the SVX is some luxury (noise comfort) vs performance when it comes to the intake.

I hate arguing this though. If I had an SVX, I'd simply try an intake, put it on a dyno or 1/4 mile track and report the results. I thought the same thing with my XT6 as far as the intake is concerned. Ended up increasing hp/torque throughout the powerband and in some places by up to 6hp. No, it's not mind altering hp but a difference nonetheless.

It would be nice to test these things out to find out though.

I wouldn't mind trying out that air filter if it was readily available. I don't think there are any vendors in the U.S. that sells them looking at the site.

UberRoo · #14 03-05-2004, 08:34 PM

It is true that there may be a compromise made, and noise reduction is a good example because it's a major concern of the manufacturer. Nearly all of the principals that work for exhaust systems also apply to intake systems. Strange, but >100% volumetric efficiency is possible (and common.) The scavenging effects that make this possible also have an effect on noise - they often tend to reduce it. I suspect - no - I'm pretty certain that Subaru has made use of this in the intake as well.

There's one way to test the intake restriction and be sure. Do a vacuum test just upstream of the throttle valves (or downstream of whatever part might be causing a restriction.) You'll probably need a REALLY high-resolution vacuum gauge because the restriction will be so incredibly low. Stick the end of the vacuum hose wherever a restriction might exist.

A primitive gauge can be made with a clear hose hung in a "U" shape and half-filled with coloured water. One end is vacuum, the other is atmosphere, the differential in fluid level is your indicator.

Myxalplyx · #15 03-06-2004, 11:47 AM

Quote:

Originally posted by UberRoo
There's one way to test the intake restriction and be sure. Do a vacuum test just upstream of the throttle valves (or downstream of whatever part might be causing a restriction.) You'll probably need a REALLY high-resolution vacuum gauge because the restriction will be so incredibly low. Stick the end of the vacuum hose wherever a restriction might exist.

A primitive gauge can be made with a clear hose hung in a "U" shape and half-filled with coloured water. One end is vacuum, the other is atmosphere, the differential in fluid level is your indicator.

Here's an article that talks about exactly what you are describing.....finding the restrictions in an intake. Eliminating Negative Boost

Really nice article to read.

A Dwyer Magnehelic Differential Pressure Gauge is a good gauge for measuring how much of a restriction is in your intake before and after certain points.