Intake Install

[bander9]

What do i need to install a K&n open cone intake i mean like how do i take off the airbox and what size filter to i need and what do i need to put it on

[Tgr_Clw]

You don't need an intake. Don't waste your money.

[Phrost]

If you want to spend the $20 on a K&N filter, I think all you really need is a screwdriver or else basic hand tools. I gutted mine in under 5 minutes, and it was so easy I don't even remember what is involved. Just pop your hood and have basic tools ready, and just take everything off that is there.

The cone style filter fits straight on with with a hose clamp too.

[bander9]

If you want to spend the $20 on a K&N filter, I think all you really need is a screwdriver or else basic hand tools. I gutted mine in under 5 minutes, and it was so easy I don't even remember what is involved. Just pop your hood and have basic tools ready, and just take everything off that is there.

The cone style filter fits straight on with with a hose clamp too.

do i need to buy a hose clamp or do i just need to buy the filter?

[LAS]

making yourself a hot air filter?

[Phrost]

You need a new hose clamp for the filter. But if you buy one new, 99% of cone filters will come with their own hose clamp. Just make sure you buy the correct diameter.

1) Take out entire oem air box and snorkel
2) Slide cone filter onto the MAF thingy
3) Tighten hose clamp on cone filter so it's on there really tight
4) Re-install snorkel to direct air flow
5) Try to make some sort of a heat shield. Your turbo is right there under the filter, and you don't want to be sucking in that hot of air.

[bander9]

You need a new hose clamp for the filter. But if you buy one new, 99% of cone filters will come with their own hose clamp. Just make sure you buy the correct diameter.

1) Take out entire oem air box and snorkel
2) Slide cone filter onto the MAF thingy
3) Tighten hose clamp on cone filter so it's on there really tight
4) Re-install snorkel to direct air flow
5) Try to make some sort of a heat shield. Your turbo is right there under the filter, and you don't want to be sucking in that hot of air.


thanks bro i appreciate your help

[AlexK]

Yeah its a pretty easy job. I had a little bit of a hard time removing the stock airbox from the MAF and unscrewing the screws for the heatshield (its really close to the cat so the space is really tight).

Get ready to hear your DV and a distinct air sucking sound loud and clear.

[LampyB]

making yourself a hot air filter?

^^exactly what LAS said...

i wouldn't recommend doing this unless you get an upgraded heat shield...you'll just be sucking in hot air and your car will run slower. the stock air boxes on our cars are great. i'm pretty sure no one here has seen any sort of power increase with a K&N. talk to Matt in the Engine FS section he'll hook you up with a great heat shield for $90 shipped.


LampyB.

[Six Speed Turbo]

X2.......You deffinately would need to upgrade that heat shield unless you like your car to be slower w/mods added!

[Phrost]

I currently have a cone filter on my car, but it's friggen winter so I'm not worrying about it. I do have a sheet of brushed aluminum that I'm going to try to fabricate a heatshield with... Hopefully it turns out awesome like my plans

[bander9]

^^exactly what LAS said...

i wouldn't recommend doing this unless you get an upgraded heat shield...you'll just be sucking in hot air and your car will run slower. the stock air boxes on our cars are great. i'm pretty sure no one here has seen any sort of power increase with a K&N. talk to Matt in the Engine FS section he'll hook you up with a great heat shield for $90 shipped.


LampyB.

but isnt that only for B6s?

[CX-7&A4]

^^exactly what LAS said...

i wouldn't recommend doing this unless you get an upgraded heat shield...you'll just be sucking in hot air and your car will run slower. the stock air boxes on our cars are great. i'm pretty sure no one here has seen any sort of power increase with a K&N. talk to Matt in the Engine FS section he'll hook you up with a great heat shield for $90 shipped.


LampyB.


Would the Hot air before the Turbo really matter?

[bhvrdr]

Would the Hot air before the Turbo really matter?


Absolutely.

[loucura]

Check out this thread......

http://audizine.com/forum/showthread.php?t=129684

[CX-7&A4]

So the last post reaffirmed what I said, I thought I was wrong for a minute there.
http://audizine.com/forum/showpost.php?p=1999703&postcount=43

[bhvrdr]

So the last post reaffirmed what I said, I thought I was wrong for a minute there.
http://audizine.com/forum/showpost.php?p=1999703&postcount=43


The last post simply lists the air path but it's important to note that increased intake air temps at the intake pickup will directly result in increased air temps at the intake manifold...

http://img.photobucket.com/albums/v714/bhvrdr/5294iat1-med-1.gif

[Phrost]

I understand physics, temperature, density, volume, etc. But if that graph is correct, it's about a 7 degree difference. If it's 50 degrees outside then 43 the next day, I do not really notice any change in performance really.

[CX-7&A4]

The difference is so small that it really isn't that big of a deal to have a CAI over a SRI, or even just keeping the stock box.

[bhvrdr]

I understand physics, temperature, density, volume, etc. But if that graph is correct, it's about a 7 degree difference. If it's 50 degrees outside then 43 the next day, I do not really notice any change in performance really.


I've seen difference in the 10-15 degree range in intake temps using a very well heat shielded aftermaket intake versus the OEM box. That may not be 20hp but I bet it is at least 5 to 10chp lost. If you look at it from other angle...such as people spending a grand or more to improve intercooling and then you see that some of the efficient aftermarket intercoolers out there are improving intake air temps (at the manifold) by 20 degrees or so then you see that 10 degrees at the intake manifold is substantial. Like you said, 10 degrees in ambient temps will not be quite as big of a difference as that 10 degrees at the intake manifold which is what was being measured with the cone in the above example.

cheers! Mike

[Phrost]

Alright, I guess we can all agree that there is a little power loss due to the increased ambient temperature of air that is entering the intake.

But what about air flow? A cone style filter can allow more air to pass through it in a given period of time compared to the oem box, but do our engines need it? What I mean is at the top of our powerband where we need the most air, doesn't the added air flow compensate for the power loss from the air being a higher temperature at all? There are more variables than just ambient temperature...

[bhvrdr]

Alright, I guess we can all agree that there is a little power loss due to the increased ambient temperature of air that is entering the intake.

But what about air flow? A cone style filter can allow more air to pass through it in a given period of time compared to the oem box, but do our engines need it? What I mean is at the top of our powerband where we need the most air, doesn't the added air flow compensate for the power loss from the air being a higher temperature at all? There are more variables than just ambient temperature...


A measurement of mass air intake in g/s of the stock paper element versus the KN style cone on the EVOMS intake showed no gains at all in intake air volume from the guy who posted the above results. Keep in mind also that warmer air is less dense air so that may also factor. MTM is a tuning company in Germany that works down the road from Audi and also Audi uses MTMs facilities occasionally for testing. MTM personnel advised me the boxes in the 1.8t which are very similar to ours are good for around 350hp.

cheers! Mike

[Geoffafa]

sothis is sorta related but not really.. is there anything u can do to the stock airbox to get better airflow for example a less restrictive air filter??

[Tgr_Clw]

What are you trying to accomplish? The car isn't going to be any faster.

[Phrost]

is there anything u can do to the stock airbox to get better airflow for example a less restrictive air filter??

You can buy a K&N drop in filter I guess. They flow better, but don't filter the air as good as an OEM filter (that's how more air can pass through it). No, it's not bad for your car and it won't hurt anything, but it should sound the same as stock and I don't think you'll notice any gains really.

The only reason people go with aftermarket filters is for the sound, for show, or because the think it's a performance increase.

[TypeMRT]

So what size one filter fits? From other threads I've gathered that it's a 3 in diameter flange. But what have people actually installed?
BTW This table of filter sizes from K&N is ridiculously long, but I know that one of them fits the B7: http://www.knfilters.com/search/univcone.aspx

[AlexK]

I installed a universal filter that fits anywhere from 3" to 3.5" and i used it in the 3" setting. So yes, get a 3" filter.