Cold Air intake? and dyno results?

[Nemesi609]

does anyone know of any cold air intakes for 3.5l coupes, and have any of you dynoed your cars yet?

[Blackmobile]

no CAI's for our cars yet, only WAI's. search the forum for intakes, you'll find lots. usually not much hp gains, only 5ish and you'll get a lot of debate about how much, some say 2 some say 15.

[dangeris]

I got 50hp

[dldjros69]

I got 50hp

Your such a great help, haha

Nem - dangeris has this on his coupe, check it out

http://cgi.ebay.com/ebaymotors...ories

[Nemesi609]

thanks for the help on the intakes, should i wait for a CAI or should i go for the regular intake?

[phobs]

Get a WAI, there will not be a CAI for our cars anytime soon if not any at all. The engine bay is just way too packed unless you free up some space by relocating the battery.

[Nemesi609]

which intake do you recomend, and has anyone dynoed their car yet?

edit: apparently stillen has a cai for our cars.

http://www.stillen.com/product...m=all

scroll down under nissan, right of the 2007-2009 altima there is a note that says altima coupe/sedan $369

3.5l only though so 2.5 drivers have to wait i guess.

Modified by Nemesi609 at 6:46 PM 2/19/2009
Modified by Nemesi609 at 7:26 PM 2/19/2009

[BlackMamba08]

which intake do you recomend, and has anyone dynoed their car yet?

edit: apparently stillen has a cai for our cars.

http://www.stillen.com/product...m=all

scroll down under nissan, right of the 2007-2009 altima there is a note that says altima coupe/sedan $369

3.5l only though so 2.5 drivers have to wait i guess.

Modified by Nemesi609 at 6:46 PM 2/19/2009

Modified by Nemesi609 at 7:26 PM 2/19/2009

That's still not a cold air intake...it's more of a WAI intake. it's a short ram intake "enclosed" in a box with air fed to it from the front

[Nemesi609]

it says its a CAI, did it lie? its listed under AEM cold air intakenot really seeing why it would actually be a short ram

[BlackMamba08]

http://forums.altimas.org/zerothread?id=378382

check it out...that's how it sits in the altima...not a true CAI, but as close as you're going to get...

[dangeris]

Your such a great help, haha

Nem - dangeris has this on his coupe, check it out

http://cgi.ebay.com/ebaymotors...ories

Thanks for giving out my secrets

[Ferguson]

Any intake that is fed from the outside and not from underhood air is a CAI. It doesn't matter where the actual filter is located, or how long the intake manifold is. In fact, if the air feed is large enough, a short-ram can actually be better. The thing that matters most is where the air that the engine breathes comes from.

Even with a WAI, you can improve things by using the stock pre-filter ducting to generate air flow in the direction of the intake. Yes, this only helps at speed, but it is better than a WAI that only sucks air from under the hood.

[Nemesi609]

whats up with the two parts.... it looks so confusing. how does it work? and why isnt it a true CAI, sry, kinda a noob.

Edit: ferguson, which intake do you recomend?

[Ferguson]

As far as I'm concerned it IS a CAI, but some will argue that the filter needs to be located in the airflow at the grille area. However, this necessitates a long tube intake that passes through the engine compartment and is subject to heating in the process, not to mention possible flow restrictions. A short-ram boxed intake can be just as effective, possibly even more so if the air source has larger ducting than the tube size after the filter.

I don't have a CAI. I have the Injen short-ram SP with heat-shield but i have kept the first part of the stock intake and plan to add a small fabricated aluminum piece to direct its flow more directly at the filter, or replace it entirely with a fabricated unit to direct outside air at the filter. Not the ultimate but much better than stock.

Anything that properly filters, flows freely, and uses as much outside air as possible is a good thing.
Modified by Ferguson at 11:38 PM 2/19/2009

[BlackMamba08]

whats up with the two parts.... it looks so confusing. how does it work? and why isnt it a true CAI, sry, kinda a noob.

Edit: ferguson, which intake do you recomend?

technically, it's not a "true CAI" because not all the air the filter is exposed to is the air coming from the duct. The filter itself is still exposed to the air in the engine compartment. With a CAI, the filter is located somewhere further away from the engine compartment, as with my previous car, it was located at the bottom (passenger side) of the front bumper. Sure there's more flow restriction, but the air is generally cooler than that from the engine bay, thus the name CAI, but that's just a technicality...

but with the available intakes for our cars, i think all of them pretty much produce the same amount of power, minimal at best...it'll sound more aggressive, that's for sure.

[Ferguson]

Is it not a box that is sealed when the hood is closed? I could be wrong but it looked that way to me. Then again, my eyes aren't the greatest...

But no matter what intake you have, you need to have a free-flow exhaust too. Any better breathing at one end requires better breathing at the other end. HP gains are very marginal if you don't have both mods.

[Rob.Vegan]

HP gains are very marginal if you don't have both mods.

3 mods...Don't forget about headers

[lilojoj]

im gonna wait for a cai. are there headers yet? oh and i just got rick rolled by dangeris

[DAAN.]

The intake market is a profitable marketing strategy.

Most air intakes are not cold air intakes.

The Altimas will get a marginal/minimal increase for a price of 200-400 USD.

[RobPaulson]

injen sounds the best

K&N sees the most gains

imo those are the only 2 real choices, sound or performance, for me, the difference in performance was not prominent enough to ignore the orgasmic sound of the injen sucking like a . . . well ya hahahahaha

(trading like 1-2hp for an AMAZING sound upgrade, but its all in the eys of the beholder =)

[Alt.ImaCoupe]

Is it not a box that is sealed when the hood is closed? I could be wrong but it looked that way to me. Then again, my eyes aren't the greatest...

The AEM is sealed against the hood, but there are some gaps where it meets the strut tower, so not sealed completely.

My eyes aren't much better, but I have one to look at.

[Nemesi609]

what do you guys mean sealed? sry kinda a newb.

[LinkNuc]

Results are 20hp to your brain, i.e butt dyno

about 0.5 to 1 on the actual FWD dyno

[Ferguson]

what do you guys mean sealed? sry kinda a newb.

When the intake filter is in the middle of the engine compartment, as with a short-ram model, it can only function as a cold air intake if it is basically shrouded in a 'sealed box' which is fed by fresh air from outside the car. If done right, I think a 'sealed' short-ram CAI is preferable to those with a long tube after the filter.

[audtatious]

A true CAI is good during non-summer months for pulling in cooler air. The problem with a CAI configuration as sold today is that they are low to the ground and during summer they can get just as heat soaked as a WAI due to radiated heat from blacktop.

In comparison to aftermarket intakes, the Nissan factory box is just as much of a CAI as they are.

[Nemesi609]

i love your avatar. so is the aem intake a good intake, or should i have gone for an injen or fujita? probably should have done more research before making a purchase.