What kind of filter did you replace over the "small filter" that came with Injen intake?

-Where did you buy it from?
-How much?
-How do you like the result after changing the filter?

I'm thinking about replacing mine with Apexi Power filter, but I can't seem to find price lower than $72 (not including s/h) or my second choice would be K&N Xtream Filter.

I need suggestions..

 

We have SPW high flow air filters that will work on the Injen intakes. It is a K&N style filter. I ran this filter on my Injen and just swapped out the filter every 3 months. The filter is $20 + shipping. The total won't go over $30.

 

I replaced mine with the filter off my Place Racing CAI. I got this part number off adifferent thread about this same discussion. Part # RR-3001 for red cap RR-3002 is for blue cap and RR-3003 for polished alum. Hope this helps.

 

You have to be careful what filter you use. The length and flow rate makes a difference in the HP and TQ that the intake helps generate. I suggest a Universal 3" cone filter from K&N if you dont like the Injen unit. Although, the flow #'s are about the same. The monsterflow is good too.

 

Y2KSteve, you have to swap out the filter every 3 months... isn't that a pain? I have an Injen and wonder how often you clean or replace the injen filter? Thanks.

 

You should clean the Injen every 15000 miles. Personally, I clean mine every 10000. It takes all of 10 minutes to do, so it isnt all that much of a pain. The worst part is getting the lower tube back on if you take it off while its hot. The connector shrinks a bit, and it makes it a real b!tch to get back on

 

You don't need to replace/clean the filter that often, but it was easy enough to replace so I saif why not? I just left the whole intake on and took the filter off from underneath the front bumper.

 

I like to polish the tube w/ nevr dull while the filter dries. As for the cleaning, I like to do it at that interval because of where its located. That low to the ground, all kinds of nasty **** gets on it.

 

Swap out for cleaning or replacing every 3 months? If replacing I think that would cost a lot over the years...

 

Thanks, how is the result after switching to this filter? any improvement over the Injen filter?

 

Can you tell me some info about Monster Flow Filter? I went to "MonsterFlow.com" but the site its still under construction.

is it foam type filter that needs to be replaced or just wash and dry? Thanks.

 

The monsterflow is a foam filter with quite an interesting design. It isnt like an Injen or K&N, which are cotton gauze with a metal mesh in them. It comes as a 2 piece assembly and the filter is shipped as a cone shape. You fold it back over itself and slide it into a basket, what gives it its shape. Inside there is an inverted cone (the point faces the throttle body, not the front of the filter). I think it makes a velocity stack effect, accelerating the air into the tube. To clean it, you use a special cleaner and then instead of oiling, you use a tackifying agent. IMO that and the K&N are the two best options. As an injen owner, I prefer K&N, but either of the two are both awesome filters.

 

Hey guys! I have a franken intake that i bought at a meet for good pricfrom the Frankencar guys- I originally wanted an Injen CAI cause its very nice
finish and son on - But a quick question:
How come there are many org members selling their injen's in the 5th gen classifieds? Are there any problems or reasons to wanna get rid off it that i'm not aware of?

 

I'm not getting rit of my at all, I love my Injen intake. I just want to replace the filter that came with Injen b/c I think its too small.

I want more Air flow!
( Injen Corp.----><-- Me )

 

Thanks for the description

 

I got my injen intake from SWAutoworks.
(Btw, great service from SWA)
I love the way it looks in my Max, just trying to figure out a way to divert some cooler air from underneath the car to the filter.

 

Cdriven: When your moving, there is air being suckes under the hood, esp at highway speeds.

Dunno why ppl are selling theirs, ive had the JWT and Frankencar. IMO they are inferior to the Injen on the street, and I lost all my low end torque in my autotragic. I installed the injen and it came back and then some.

 

Yeah, I figured moving at speed would draw in some cooler air.
Does anyone have the Injen Intake shield??
I was thinking about getting it, but since I have the auto, theres not a lot of room down around the filter...with the auto cable.

I do love the sound of it!
I wish they would have sent me the red/ss intake, looks better than the black.

 

.......

 

i have the red/ss i wish i got the black. The heat shield fits on the autos w/o issue. I had it, but it made little to no difference in power. What it mainly does is keep the filter from getting splashed.

 

Can you tell me where you ordered your heat shield and how much? I've checked their website but did not find any info.

 

http://www.injen.com/dressup.html

HS5000P Aluminum Filter Heat Shield (Fits 2.50", 2.75", and 3.00") n/a

 

thanks, do you remembered how much you paid for it?

 

Monster Flow is one of the worst filters on the market, if you can even call it a filter. Numerous tests have shown that it performs very poorly against paper/wire-mesh filters. Apexi is the best filter on the market but you PAY for it. K&N would probably be the best solution for the price and filter performance.

Frankencar tried to convince everyone that Monster Flow was the best filter ever made. The quickly retracted the comment after several complaints of the filter performance.

http://forums.maxima.org/showthread....low+frankencar

http://www.mkiv.com/techarticles/filters_test/1/
Click on the individual filters for information.

Really makes me want to put a foam filter on my intake

 

i got a apexi filter on mine... sounds alot better too

 

Apexi stuff is just , i dont care what it is. Oh and BTW, The monsterflow was designed for long tube intakes.

Vmaximus: the shield was like 50 or so, it really isnt worth it IMO.

 

I put the Apexi filter on Injen intake. My impression (compared to the Injen filter) is that she gained a little low end tq, she pulls harder in the middle and has a deeper growl at WOT.

The main reason I put the Apexi on is because it is dry and I want to prevent getting oil on the MAF sensor.

That's my .02.

Oh yeah, I bought the Apexi filter at

http://www.alteredatmosphere.com/

 

I have a used Injen on the way. After researching, I purchased the K&N RU-2820 filter. It has a 3" Inlet, the filter is 6.5" long and the filter diameter is 5". I read in some threads that that filter was used on PRs CAI and the old Berk Intakes.

 

The oil wont get all the way up there.

 

I just got my Apexi Power filter and put on my cold air intake. I sound sweeeeeeet. I got my filter on groupbuy.com for $70 +shipped

 

Exactly why is Apexi ? Is it because they make a better filter than anyone else that has proven itself time after time? And please explain the difference between a filter for a long tube intake and a short tube intake. Either way the Monster Flow is going to let the same amount of dust, dirt, rocks, and boulders through.

 

thanks for everyone's Interest in this topic~

Regarding installing Apexi intake installation on Injen Intake, do I just need the filter or I need something else to put it on my Injen? Like a bracket or some sort?

Because it looks like this in the back.

 

It seems it's Apexi and the K&N as long as it's for a 3 inch inlet??
Anyone tried the filter SWA are selling and if they are the same?
Haven't changed the filter since I got it 8 months ago! eck!

Also, a stupid question....I'm sure alot of org members tried those automatic touchless carwash in gas stations etc.
Well, I just went to one weeks ago and as I went in, streams of water are sprayed from the bottom to clean the bottom of the car....I kinda panic that water will get to the Ingen. Thank god nothing happened......so I guess the question is, are those car washes risky, if not harmful?

Cheers

 

The filter we carry is not the Apex dry power filter. The one we have comes standard in every HotShot intake and has a lot more filtration area than the Injen filter. It is a K&N style filter as well.

 

Lumbee: I have tried the apexi filter, and dynoed with it. The K&N made approx 2 more hp (not that anyone would notice 2hp). Apexi as a brand has this for a philosophy; make a part for a $20,000 project car and then make it work for an $80,000. Greddy, on the other hand, practices the opposite philosophy. They make parts for an $80,000 project car, then make them applicable to projects of lesser extent. Now, this does hold true for their S-AFC and whatnot, but not necessarily so for their filters.
A properly made cotton gauze oiled filter should trap just as much dirt as any dry filter. Ive had K&N's as well as the Injen filter (which are damn near identical BTW) and never had an issue with dirt getting through. Also, as they trap more dirt, they become more efficient at filtering but less flow efficient. Hence the need for cleaning and reoiling every 15-20k miles.

Foam filters like the monster flow let in even less dirt by their nature. It has 2 layers of foam, one coarse and another fine. (even the coarse layer isnt all that coarse, but in fact very fine.) There shouldnt be any dirt getting though to the inside (when I went to clean my Injen and K&N filters, they were always spotless and lightly oiled inside even though they were filthy outside. The Monsterflow i was playing with was just taken out after 22k miles of driving and was horrid on the outside but squeaky clean on the inside).

Now as for the long tube design, i say that only as a personal guess. I dont have any fact stating yes or no. The reason i guessed is the wayt the filter looks ont the inside. Its a cone that tapers towards the throttle body. I think it might help accelerate air into the tube. So with a short intake (frankencar, etc...) the air never really gets to accelerate, it just hits the TB and gets dispersed.

 

Does anyone know where I can find Apexi Filter w/ mounting bracket so I can get it fit on my injen? thanks ahead~

 

believe me bro, the injen one does just fine.

 

Check their website at http://www.apexi.com/ . There is a list of dealer by state.

Good luck.

 

Tell me more about this heat shield, on my Z the injen filter sits right out in the open so it will get wet if driven in the rain, I just need something to cover the front of the filter. Any pictures of it?

 

No matter where it is (on the maxima, its behind the left foglight) it still gets wet. Wet isnt all that bad on an oiled filter (because oil and water dont mix). The heatshield covers about 75% of the filter and supposedly prevents it from heat. Well since the bottom of the injen filter is rubber, it shouldnt get hit directly with water. Also It isnt the issue of the filter getting hot or it takin in hot air, the intake tube itself gets hot. So i guess it helps to cut residual heat a little. The best way is to get some header wrap tape and cover the intake tube. That should give the best results. Ive had the injen with the injen filter for 27000 miles and havent had a problem once. I tried the K&N for a lil bit and even took it to the dyno. No difference, so i took it back. Monsterflow was good too, but i didnt have it on for long, just a couple dyno pulls. Then i put it back on my buddy's car. Overall, the monsterflow and k&n did great (the diff was 1hp to the K&Ns advantage, which is totally irrelevant cause it coulda been dyno error.). The apexi was consistently 2hp behind the monsterflow and K&N.