Injen cold air intake
 

I am leaning towards the Injen CAI vs the Stillen CAI cause the Stillen I must make mods to the core support and really dont wanna fool with that if i wanna go back stock. the Stillen says 17 to 18 hp and the Injen says 12 to 15. Any opinions on the Injen? also was gonna go with the Black cause I am thinking the polished will be harder to maintain. Thanks for any input. Mez. :confused:

Take a look at the Takeda Stage 2 CAI. It is very similar in design as the Stillen G3 and you dont have to make any mods to the core support. No cutting.

One thing to consider with the Injen is placement of the filters. They are low and are susceptible to hydro lock if you drive into a small pond. But if you do not daily your car then you will likely never see a monsoon or flooding on the roadways. So if you primarily drive it in sunny condintions there is absolutely no worries.

Cool, Will do, Thanks! O... and love the Boondock Saints! lol

How much is Injen. Like speedfreek said, look at Takeda seems to have all the benefits and no minuses.

I have AEM which is down in fenders like Injen, Nismo. But requires moving windshield washer and has a maf signal that needs to be spliced.

Don't you also have to move windshield washer with injen?

The modifications to the support are pretty minor and super easy to do with a dremel and some patience. It's a composite plastic material that machines really easily with a power tool.

Returning to stock isn't affected by the modifications, the stock airbox has little snorkels that go through the holes, the extra space won't bother them.

I know there are people happy with the in-fender solutions, but having bought a similar solution let me say this: Never again.

The numbers are pretty much irrelevant. I feel like stillen embellished their numbers a bit. I had the G3's on my G37 and Injens on my Z. I like em both though but I lean towards injen because I feel air flows more freely towards them. Less obstruction between the filters and open area

The filter placement is only a problem if you drive through a small pond like you said. Do you know anyone who takes their Z through 8 inches of water? I've had the injens for 2 years and daily drive my Z and have had it out in some pretty bad storms with no problems what so ever. The filter placement is no issue

not sure about moving bottle...dont think so and there on ebay for around 500. give or take.

With Injens you will need to fab the washer fluid reservoir. So either way you go you have to mod something. I figure the less I'm doing with hard points like that, the easier it is. With the stillens if you have a keyhole saw or dremel, it will take you seriously only 10 minutes to cut the support. You'll be ok I promise. :tup:


Plus, aside from STILLENS advertising, consistently high numbers have been seen with Stillens in independent dynoing. The Injens are a good one to consider, but with the stock front end, I just don't see them getting as much unobstructed airflow.

Other options are the Akuma intakes and AAM Intakes. Both have similar filter placement to the Stillens at a lower cost. :tiphat:

Hence why I said a small pond. But also there have been reports of people having issues driving in heavy rain or their car being rain soaked from sitting outside in heavy rain. Just something to think about if it is used for a daily and you get torrential downpours on the regular.

Either way for my money I would go with the Takeda Stage 2 CAI. Probably in the same ball park as Stillen G3's as far as gains and you don't have to mod or cut anything to install them. Your plastic and washer fluid reservoir are safe.

How many people that have it have ran dynos? Just curious because I haven't seen any posted, or any gains even listed for them..?

That's just it ZERO that I know about at least. But the design is identical minus the filters/filter used. aFe makes some good filters. I don't think it would be considerably less than the Stillen or Injen's.

Sometimes the lack of information, is information in of itself. :ugh2:


Trust me, not all designs are the same, even if they look almost identical. :tiphat:


I'd honestly recommend going with a known, trusted, proven name if you're not fearful of incurring the cost of getting one, not being 100% happy and buying another to replace it. :twocents:

I fully understand that and the concern that comes with it. I am confident however that aFe teaming with Takeda and then Greddy buying into the design that it will perform with the others.

Just remember that at one point that name was an unkown, untrusted, unproven name that someone took a chance on in the beginning and got good results. Then the masses flocked to it as word got out.

People usually do that when it's a Good word. :tup:


I do see that the Greddy design is almost identical to the Takeda design... I wonder if there is some paperwork being exchanged in terms of legality?

If I can find my dyno sheet, ill post it. I made 333 to the wheels on a mustang dyno. Injen, art pipes and mxp exhaust. Ill run it again if i get a chance now that I have my FI exhaust. See if there's and difference.

That's pretty damn good sir!! :tup:


I was asking for dyno's with the Takedas though.

... do you have a stock baseline on that same dyno? Cuz uh.. Wow.

I don't remember that number but ill look for it. I recently moved so things are scattered and some lost haha I'm tuned also if that helps

The reason the Greddy looks almost identical to the Takeda is because it is. It seems they have entered into a partnership of sorts.

Interesting... Although since neither care to have published independent dynos, I can't really say anything on their Actual performance gain.

It's exactly the same. It's just private labelled.

I could name one or two other intake systems on the market that aren't made by the company whose name is on the box. At least one of which would probably make you raise your eyebrow. (Just one eyebrow, mind you)

http://www.the370z.com/intake-exhaus...-got-mine.html

link inside that thread got the takeda on sale for 15% off until end of this month...just got mine gogo!

I just installed the Injens and love them! But, I do not recommened them for a daily driver. If you just drive your Z on sunny nice days like me don't look back. I washed my car the other day and shined a flashlight to look down at where the filters sit and there was a little bit of water. I can't imagine what would happen if I got caught in a big rain storm and hitting puddles. I have a buddy that has the stillens and he likes my injens better because the intake sound is louder and you can modify the fang vent covers on the facia to make it like ram air. Ive also notice cooler engine temps. Throttle response is better and engine revs smoother.

Orly?? :icon08:

The answer to what happens if caught in a big rain storm is - nothing. Twice I got caught, it was raining sidways. I drove 17 miles home both times from work. Not one issue to speak of. Ive also driven in many other rain situations with no issue.. Also with the car washing. Water doesnt float so it wont magically raise up. A little water in the well means nothing. It'll drain out and thatll be that. Unless you burry your front end in the ocean you'll be fine and if water intake worries you that much. Get the mesh water shields,

Hey Romulus1, I appreciate you sharing your experiance with the injens in the rain. That makes me feel a little less worried about it. I understand water doesn't "magically" rise up. I was just sharing my experiance and advising to be cautious.

does the Takeda reguire removal of front bumper facia?

did you have to remove the front bumper cover to install the takeda's?

Hey Romulus1 and SilvernightZ I want to share with you guys a problem that I am having with my Injen CAI.NO question it looks nice and drives faster but I would like to share with you. I washed my car and one time when I started the engine it was shaking and misfiring and it won't Rev up. I tried to drive it and it was going on and off on the road. I knew right away it was the CAI. Then last night it was raining here in sunny California and I was unfortunately caught driving my Z which I usually don't drive when it rains cause I have another car. Anyway I parked it last night in my driveway and today this evening I started the Z to move it inside my garage and it was shaking again and engine keeps dying. All the lights on the instrument panel came on . I tried to let it run for a few minutes and Rev it slowly and it won't rev above 3K. Then I tried driving it and it was the same as before it was going on and off and died on the road. I restarted it and finallly it is running again but I have the Service Engine Soon light now that won't turn off. I am so disappointed because how can a car not be driven in the rain or even on a car wash it gets affected! Now I have to go to Nissan so they can reset my service engine soon and then I am planning to switch back to the OEM air filters. it is just not worth the headache. Does anyone have this issue? Please share before I remove this intake and switch back to the OEM. Thanks

Yes, you have to remove the front bumper to install/clean the filter.


Have you had a Nissan tech, or someone else (autozone) check for a thrown code? If it's bogging down as bad as you say, a thrown code might help you see what the real culprit is before jumping on the CAI...

I had the Injens in my Z. I really liked them. I noticed the moisture lag issue went away if I cleaned my filters. It does mean taking off the bumper, but that's not really hard to do.

I just read another Thread about the same problem form goez's thread and looks like we have the same issues and he figured the filter injen is using gets wet from the water that drips form the hood. he performed a few tests and was able to duplicate the issue everytime. So it's not any bad codes, it's the CAI.

Mine will come off asap when I have time. I have enough of this Injen CAI guys

Just do the ecu reset yourself

I still can't fathom how enough water gets inside the area where the filter is housed to cause issues. The Nismo intakes I have put the filter in the exact same location, I've never once had water issues, even when I ditched the plastic pieces that keep water and whatnot from flying directly in to the filter from the radiator opening. I even had freakin scoops funneling air (and water and whatever else) from the radiator opening to the filters and never had any issues, even while driving in anger in the rain.


Maybe stop spraying your filters with high-pressure water?

If you're getting down in there enough to get the filter wet enough to cause issues, you're gonna be getting water on just about any CAI you could buy, so you should probably think about the K&N or JWT intakes and save yourself the trouble.

I've sprayed directly into the air damn with no issue as well as driven in a few really bad storms (raining sideways style storms) never had an issue. Maybe its cuz i have the "splash shield's" but what ever. I guess some people have issues


:iagree: You're talking a lot of water needs to get in there to cause an issue. A LOT

I am still confused cause today I took the car for a car wash and it was fine with no issues at all. I asked the guy though to spray the filter with that compressed air they use to dry the car doors....

I've had my Injen CAI through many car washes and a couple rain storms. Absolutely no issues. I chose Injen over Stillen because relocating a windshield washer reservoir is not permanent, cutting into the car however... sounds retarded.

It's not retarded so long as you do it properly. And it's in a spot you never see... So it's not visually a problem either.