Fujita Intake installed!

[GSXR_John]

Got my intake and installed it today. Only took about 15 mins which was nice. Not sure if I like it though. I haven't driven it yet, but I reved it a little. I'll see tomorrow. I'll try and put up a sound clip tomorrow. Sorry about the foggy pics. They're from my cell phone.

[SHIFT_COUPE]

Looks good!

Let us know how you like it!

[leif927]

You installed it on a 2.5. I have a 2.5. Definitely let us 2.5ers know how it sounds/feels. Only reviews I've read on intakes are from 3.5ers.

[heysteve]

hey guys i just had this installed on my 2.5 and it is LOUUUUD! here are some pictures of the setup on my car. i also have a question for GSXR_John and whoever else has the fujita intake installed. did you notice that the filter sits on this part of the battery? (refer to the pic with the circle) ^the reason i circled the vibration mount on the bracket is because it limits how i can arrange the intake to not make contact with that little part its pushing up against. its not making any pressure on it but its still sitting close enuff where the foam has become indented, just to give u an idea. anyways, anyone else who has installed this or knows anything about whether or not i need to rearrange it so its not touching, please let me know. otherwise look forward to an update with videos of the intake.

[SHIFT_COUPE]

Looks nice! I see what you mean about where its sitting. Can you push the filter up the tube any farther or is the arm for the vibramount in the way?

[heysteve]

thats as far as i can fit it on. i think the only way i could move it is shortening the rubber vibration mount. i tried ramming everything up as far as i can get it but it still seems to make contact.

[GSXR_John]

Mine isn't touching I don't think. I did notice how close it was to the battery though. I'm going to take some better pics tomorrow along with a sound clip. I'll look at it again then. And yes, it is LOUD! That's why I don't know if I like it or not. I wanted a sporty sound and all, but it's a 4 banger and not fast at all, so imo it's WAY too loud!

[GSXR_John]

I did 2 short sound clips. Sorry about hte crappy quality.http://www.youtube.com/watch?v=fYW3AL75 ... P9L2tAG9Qo
Modified by GSXR_John at 9:02 PM 10/19/2007

[dynot]

So help me understand this fellas. I'm basically wondering how I can get the same sound out of the exhaust similar to the G35. I love that sound because it isn;t too rough & throaty, yet still distinctive and noticeable.

Is an intake such as this one all I need? There's another thread here with a video about someone who installed Borla exhausts which has the same effect. Do both result in the same thing?

Also, I'm not into complicated installations so is this intake easy to install on your own?

Thanks...

[GSXR_John]

So help me understand this fellas. I'm basically wondering how I can get the same sound out of the exhaust similar to the G35. I love that sound because it isn;t too rough & throaty, yet still distinctive and noticeable.

Is an intake such as this one all I need? There's another thread here with a video about someone who installed Borla exhausts which has the same effect. Do both result in the same thing?

Also, I'm not into complicated installations so is this intake easy to install on your own?

Thanks...

Anything you get aftermarket is going to be louder and more agressive than the g35 stock sound. The only mod performance wise to my car is the intake. No exhaust. All that noise came from just the intake.

[shift_mikey]

So help me understand this fellas. I'm basically wondering how I can get the same sound out of the exhaust similar to the G35. I love that sound because it isn;t too rough & throaty, yet still distinctive and noticeable.

Is an intake such as this one all I need? There's another thread here with a video about someone who installed Borla exhausts which has the same effect. Do both result in the same thing?

Also, I'm not into complicated installations so is this intake easy to install on your own?

Thanks...

Our good ol' buddy Generic808 (G-dawg ) has a 3.5 sedan. He has the Injen intake, and he says it makes it sound just like the G35/350Z, especially in the 2k - 2.5k rpm range

[MaksimSF]

today I called Weapn-r office they sad they have it for 2.5, "Secret weapon" Short ram with shield, I bought Intake for my 07 sentra from them, couple weeks before I trade it in for coupe, no complains, they sad its gona cost me ~200, so what do u think guys?

here the link for sentra WR "secret weapon":

zerothread?id=283373

[generic808]

So help me understand this fellas. I'm basically wondering how I can get the same sound out of the exhaust similar to the G35. I love that sound because it isn;t too rough & throaty, yet still distinctive and noticeable.

Is an intake such as this one all I need? There's another thread here with a video about someone who installed Borla exhausts which has the same effect. Do both result in the same thing?

Also, I'm not into complicated installations so is this intake easy to install on your own?

Thanks...

dynot, the G35 sound isn't from the exhaust, it's strictly motor. Opening up more air for your engine to breathe will give you that exact G35 sound because they are the same motors. Just installing the INJEN intake WILL give you that sound you so want. Trust me, I was in the same boat as you. I really, really love that sound and was excited after I installed the intake because now, it sounds exactly like the G35/350Z after a short break-in period.

I'll find the old thread with installation pics and vid clips so you can hear how it sounds in and out of the car.

[heysteve]

i just found a problem with the intake. around 1200 rpms my pedal starts to vibrate and i hear a chattering noise. i believe it may have something to do with how my intake is making contact with the battery so i will be redoing the installation.

[GSXR_John]

I've noticed a chatter coming from the engine compartment as well, but only when the revs drop. Not idling. Let me know how it turns out.

[chow]

Ive been watching the intake videos on Youtube and can hear the g35ish sound in cabin. I havent seen a video of the car driving with the camera from the outside... Does it actually sound like the g35 then? Will people hear the car and think .. g35 (VQ) and then turn their heads and be like ..wtf?I really love the sound of the g35 when it drives by... mmm.. But cant imagine that the altima can do that. Also, is the g35 engine noise greater then the 350z? B/C i can always hear a g35 approaching but not a 350. They use the same engines too.. :S

[MaksimSF]

ok so we saw injen and fujita in action seems like its time for "secret weapon" fom Weapon-R, so its cheaper and I can get it directly from main warehouse, for~200 so when i'll do it i'll post it.

[adidas2go]

I retract my statement. read the post wrong
Modified by adidas2go at 9:19 PM 10/20/2007

[heysteve]

Not true buddy. my exhaust is defiantly 100% borla Its a prototype tho specially installed on this car so its not available yet. come check out the threadhttp://forums.nicoclub.com/zerothread/286779

i dont understand how this proved that aftermarket parts aren't gonna make your car louder.

[nissantech06]

ok so we saw injen and fujita in action seems like its time for "secret weapon" fom Weapon-R, so its cheaper and I can get it directly from main warehouse, for~200 so when i'll do it i'll post it.

I still hate the idea of a WARM air intake.

[generic808]

I still hate the idea of a WARM air intake.

So you can install a CAI and suck up all water into your motor when it rains! Hey, I feel much safer running the short-ram vs. a CAI. I'll never have to worry about changing out my intake when rainy season comes.

[MaksimSF]

So you can install a CAI and suck up all water into your motor when it rains! Hey, I feel much safer running the short-ram vs. a CAI. I'll never have to worry about changing out my intake when rainy season comes.

[windhaven]

So you can install a CAI and suck up all water into your motor when it rains! Hey, I feel much safer running the short-ram vs. a CAI. I'll never have to worry about changing out my intake when rainy season comes.

[BigDan727]

<object width="425" height="355"><param name="movie" value="http://www.youtube.com/v/w3GX9cWcRRE&re ... ram><param name="wmode" value="transparent"></param><embed src="http://www.youtube.com/v/w3GX9cWcRRE&rel=1" type="application/x-shockwave-flash" wmode="transparent" width="425" height="355"></embed></object>

[SHIFT_2.5S]

<object width="425" height="355"><param name="movie" value="http://www.youtube.com/v/w3GX9cWcRRE&re ... ram><param name="wmode" value="transparent"></param><embed src="http://www.youtube.com/v/w3GX9cWcRRE&rel=1" type="application/x-shockwave-flash" wmode="transparent" width="425" height="355"></embed></object>

What's this? Are you trying to hack the forum?

[cliffy21]

What's this? Are you trying to hack the forum?

LOL, it's like the Matrix.....

[opekone_1988]

FYI.. I installed my Injen intake on my 2.5L maybe like 2 weeks ago and I was kind of divided at first, not too sure i liked the loud deep sound coming from a 4 banger but then the engine gets used to the new (Opps, what I meant was: increased amount of oxygen available for combustion with fuel.) and the sound kind of changes, a little milder but what I do like is that you cant hear the intake if youre under 3000rpms, but once you punch it, you hear the engine sucking all the air and it sounds just like a G35. Its nice because you can pretty much control the noise level whenever you want.
Modified by opekone_1988 at 2:35 PM 11/19/2007

[Darius]

Can someone provide some hard information for us all here. It appears that a lot of these aftermarket intake manufacturers are providing MAF sensor mounting flanges for the stock MAF sensor to be bolted onto the new intake pipe. My question is, how does the stock MAF diameter compare to the diameter of the new intake pipe? Information from several brands would be good too.

Then, and only then, will we start to talk about A/F ratio... an intake does NOT change this unless the intake diameter is larger and artificially tricks the MAF into thinking less air is going into the motor and, therefore, shortens the injection pulse.

[opekone_1988]

Can someone provide some hard information for us all here. It appears that a lot of these aftermarket intake manufacturers are providing MAF sensor mounting flanges for the stock MAF sensor to be bolted onto the new intake pipe. My question is, how does the stock MAF diameter compare to the diameter of the new intake pipe? Information from several brands would be good too.

Well as for the Injen, the MAF sensor is poping out maybe/almost like a good 2 inches unlike the stock MAF which seems to be almost completely inside the pipe and not sticking out as much as the Injen. As for diameter maybe like another 2.5".. Almost near stock but just poping out a bit, thats it. Here's some information on MAF.. in case anyone was wondering....

A hot wire mass airflow sensor determines the mass of air flowing into the engine’s air intake system. This is achieved by heating a wire with an electric current that is suspended in the engine’s air stream, not unlike a toaster wire. The wire's temperature increases with the wire’s electrical resistance, which limits electrical current flowing through the circuit. When air flows past the wire, the wire cools decreasing its resistance, which in turn allows more current to flow through the circuit. As more current flows, the wire’s temperature increases until the resistance reaches equilibrium again. The amount of current required to maintain the wire’s electrical resistance is directly proportional to the mass of air flowing past the wire. The integrated electronic circuit converts the measurement of current into a voltage signal which is sent to the ECU.If air density increases due to a pressure or temperature change, but the air volume remains constant, the denser air will remove more heat from the wire indicating a higher mass airflow. Unlike the vane meter's paddle sensing element, the hot wire responds directly to air density. This sensor's capabilities are well suited to support the gasoline combustion process which fundamentally responds to air mass, not air volume.

Now correct me if i'm wrong, which I may very well be... a WAI will generally (Slightly) increase both HP and MPG, due to cooler air, less flow restriction and less fuel consumption (Changes in the Air/Fuel ratio) I was once told this by a friend (Mechanic) that less fuel is required to combust in the chamber if colder air/More oxygen is introduced. Like I said, I might be wrong but always though this to be correct. Anyone want to clarify?

Modified by opekone_1988 at 2:59 PM 11/19/2007
Modified by opekone_1988 at 3:04 PM 11/19/2007

[Darius]

Alright, let me think about this. The air coming into your engine is temperature 'x' lets say. Assume the engine is at operating temperature (to neglect timing retard and fuel compensation for a cold motor). The MAF sensor determines the amount of air entering the engine through the cooling of a precisely heated element. The energy absorbed by the air is a factor of intake air temperature and density. This is why a blow-thru MAF setup is still able to work for boosted applications.

The ECU interprets the signal from the MAF along with several other factors and determines the engine load. For a given load at a given rpm, there is a value for how long the fuel injector is to fire (basically a number in a spreadsheet with load on one axis and rpm on the other - called a fuel map). The higher the number, the longer the injector stays open.

So back to the topic at hand, having a colder air charge will be sensed by the MAF where more fuel will be dumped into the engine. You will burn more fuel with a colder air charge, but you will get more power so you won't have to push the throttle as far. If you are looking for pure acceleration, then the colder air charge will equal more power because there's more oxygen per intake stroke. There are old carburator theories that say a warmer intake charge helps the fuel to atomize, but that is a carb. Intake port injection will not have that issue. So after combustion, the O2 sensor monitors the exhaust flow to make sure the combustion was complete.

For different cells on the map, the engine runs at differing air-to-fuel ratios determined by Nissan for reliability and not so much for high performance. The car will idle around 14.7 or a little higher. (Direct-injection engines run at 65:1 at idle) At WOT at redline, the engine will be running at around 12. So you can see that the A/F ratio decreases with increasing load and increasing engine speed.

The part I don't fully understand with a closed-loop system is that the O2 sensor is telling the ECU that the engine is either running lean, stoich, or rich. Where on the map does the ECU begin to ignore the O2 sensor input and just run its the injectors straight from the map? You sure as hell wouldn't want to be running at 14.7 at WOT at redline.

Hope this didn't end up being too long.