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Review of Injen CAI

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Old Jul 27, 2003 | 12:44 AM
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Review of Injen CAI

First off I have a '97 GXE Automatic, I received the intake from Adventon.com and I had my trusty mechanic install it. Taking out all the stock intake assembly was relatively not hard. But where we were messing up was screwing in the bracket that's attached to longer piping of the intake. After we figured it all out we put everything in together and at idle and just crusing the car sounds COMPLETELY STOCK, under 3000RPMS the car sounds STOCK, when you floor it IT SCREAMS REALLY LOUD, and it only growls, or screams in Drive not in Neutral is that normal? I haven't noticed drastic changes in performance, I really haven't noticed anything performance wise, or maybe I don't know it's there and I'm not feeling it. But I beat a couple of cars, a souped up Civic, Accord, Celica, and I lost on the highway from a 60MPH roll to a late model Jetta VR6 that was modified. Also my mechanic said that my air filter was touching some transmission cable a little and we'd have to allow more clearence. Should I also reset the ECU? Thanks for reading and helping, all comments are welcome
Old Jul 27, 2003 | 02:17 AM
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yea...definately reset the ECU after installing an intake.
Old Jul 27, 2003 | 07:00 AM
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Resetting the ECU does nothing. It only clears error codes.

Make sure you move that intake around a bit so the filter isn't hitting anything. You can bend that bracket slightly to reposition the last tube so the filter sits more forward and under the battery try.
Old Jul 27, 2003 | 07:20 AM
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I'm about to do this install myself...Do you have to cut a hole in the fender with the injen??
Old Jul 27, 2003 | 03:57 PM
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Originally posted by zemp68
I'm about to do this install myself...Do you have to cut a hole in the fender with the injen??
nope
Old Jul 27, 2003 | 03:58 PM
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Originally posted by LiquidNine


nope
Awesome...
Old Jul 27, 2003 | 04:21 PM
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Call injen order a smaller cone the cone they send with the intake is for 5 speed not auto.
Old Jul 27, 2003 | 04:43 PM
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UPDATE

We just moved the air filter around a little bit so that its free of the transmission cable, the air filter sits directly in front of the fan under a splash shield, and the intake is definantly a sleeper because you can't hear it just doing normal driving, step on it to get mid range, and high end and it screams definantly a very very nice V8 type sound. A Budget Y pipe, followed by a Greddy Catback is next.
Old Jul 27, 2003 | 05:39 PM
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Originally posted by dss42
Call injen order a smaller cone the cone they send with the intake is for 5 speed not auto.


The filter that comes with the intake IMHO is to small. Some, including myself have purchased a larger filter. A little tweaking and even a lager filter fits quite nicely.
Old Jul 27, 2003 | 06:01 PM
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Originally posted by HarrisH


the air filter sits directly in front of the fan under a splash shield,

This is why I think the Injen is a bad design. That filter location will suck in nothing but hot air from the radiator.
Old Jul 27, 2003 | 07:53 PM
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the dyno test shows results...why would the design be soo bad? Does frankencar have documented results? the only CIA i know that documents results is Injen...correct me if im wrong?

just a potencial Injen customer
Old Jul 27, 2003 | 08:27 PM
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1. The filter that injen sends you is the filter for the intake for whatever particular model of car you have, not whether it's a 5-speed or auto.
2. I have a larger filter on mine.
3. Pretty much every reputable manufacturer has results of what their product can do. I'm not sure if Frankencar posts theirs, but i'm almost positive that SteVTEC has them, and if you ask him real nicely, i bet he'll share.
4. For the longest time i fought the "Injen VS. Place Racing VS. Frankencar War", and it's pointless. More or less, they're all the same, with maybe a +/- 1-2 1/2HP difference. Basically, they make your car sound cool....powerful, but not ricey. While injen's is more expensive than most, it's a true CAI, and you don't have to worry about cutting a hole in your fender, or (worrying as much) as hydrolocking your engine.
Old Jul 27, 2003 | 08:45 PM
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Did you get a better throttle response with Place Racing compare to Injen and Franken?



Originally posted by fearthegecko
1. The filter that injen sends you is the filter for the intake for whatever particular model of car you have, not whether it's a 5-speed or auto.
2. I have a larger filter on mine.
3. Pretty much every reputable manufacturer has results of what their product can do. I'm not sure if Frankencar posts theirs, but i'm almost positive that SteVTEC has them, and if you ask him real nicely, i bet he'll share.
4. For the longest time i fought the "Injen VS. Place Racing VS. Frankencar War", and it's pointless. More or less, they're all the same, with maybe a +/- 1-2 1/2HP difference. Basically, they make your car sound cool....powerful, but not ricey. While injen's is more expensive than most, it's a true CAI, and you don't have to worry about cutting a hole in your fender, or (worrying as much) as hydrolocking your engine.
Old Jul 27, 2003 | 08:47 PM
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i'd prefer the nice price and low end power(along with high) that i got with the frankencar intake
Old Jul 27, 2003 | 09:28 PM
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I have an Injen cai on my car and I just ran a maxima with catman we were going side by side for a few runs.
Old Jul 27, 2003 | 09:35 PM
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I put my injen on my 2K1 about 3 months ago, I removed the splash shield until my SES light came on, my local buddy tried to pull the code but on his tool it didn't display any codes. He said it might be the Air Temp Control sensor, the sensor before the MAF on the intake and it's been rainy up here in Jersey recently. Anyone else experience this with there injen? But I love my injen, looks, and performence. BTW I've had the stillen high flow and a y-pipe. I miss my Y and Injen = Nice Combo!

Robert
Old Jul 27, 2003 | 11:00 PM
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How can you say an Injen is not a true CAI I mean it sits directly over a splash sheild which is open to the ground and I'm sure the radiator throws a lot of hot air but I mean I'm sure the air being taken in by the filter is colder than the air around the radiator. Right?
Old Jul 28, 2003 | 02:30 AM
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i have an injen and compared to most CAI's the Injen tubing stays fairly warm while others have cooler pipes. I didn't do an in-depth review of this, so anyone care to share input?
Old Jul 28, 2003 | 04:04 AM
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Originally posted by HarrisH
How can you say an Injen is not a true CAI I mean it sits directly over a splash sheild which is open to the ground and I'm sure the radiator throws a lot of hot air but I mean I'm sure the air being taken in by the filter is colder than the air around the radiator. Right?
When that fan kicks on, your filter will get nothing but hot air.
Old Jul 28, 2003 | 09:34 AM
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and it only growls, or screams in Drive not in Neutral is that normal?
It will growl in neutral. As you know, it growls louder under heavy throttle. The most likely reason you aren't hearing it in neutral is because you aren't flooring it. Of course you don't want to floor it for more than a second in neutral. You should let off before it hits redline. But under heavy throttle, you can hear the Injen in any gear.
Old Jul 28, 2003 | 10:04 AM
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The fan only kicks in when you're at a stoplight, or going really slow, or in heavy traffic, the fan doesn't kick in when you're driving without stop and go. Correct me if I'm wrong.
Old Jul 28, 2003 | 10:19 AM
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Originally posted by HarrisH
The fan only kicks in when you're at a stoplight, or going really slow, or in heavy traffic, the fan doesn't kick in when you're driving without stop and go. Correct me if I'm wrong.
The fans are on whenever the AC is on too.
Old Jul 28, 2003 | 10:50 AM
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Originally posted by BORQUA79
the dyno test shows results...why would the design be soo bad? Does frankencar have documented results? the only CIA i know that documents results is Injen...correct me if im wrong?

just a potencial Injen customer
Yes Frankencar has results and this is why they've sold so many intakes. Plus, what does Frankencar have to do with the comments about Injen?

Result Dyno's from Steve's (DMBMaxima2k2) 2002 Max.
Before:



After:

Old Jul 28, 2003 | 11:05 AM
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Do you have to remove the plastic piece almost directly under the battery tray to install the injen.
Old Jul 28, 2003 | 03:08 PM
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If you are referring to the resonator box under the battery, yes. Or I did anyway.
Old Jul 28, 2003 | 03:31 PM
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Yeah that's it, I wasn't sure about the name, thanks.
Old Jul 28, 2003 | 03:44 PM
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In my opinion (just an opinion so don't jump all over me), based on what I have researched in so many threads and discussions in this forum, the only true CAI system is the one that routes the air filter under the battery tray, I think that's the PR kit. If you ever look in there, that area is completely isolated from the engine compartment and that is a perfect place for a CAI filter to sit in. You can then cut a 3" hole into the plastic shield below it to allow more air flow. Some people have removed their foglamps in exchange for better cool air flow. But it's been proven based on people's feedbacks that the peformance gain is still minimal and up at the higher RPM ranges. The Injen is really not a true CAI system because it still draws air inside the engine compartment behind the radiator. Contrary to a real CAI system, the real one routes the airfilter in a totally isolated area away from any possibility of injesting hot air into the intake system while it only sucks nothing but cooler outside air in. I guess that's why they came up with the name Injen = injest hot air into your engine....j/k! Have you ever put your hand behind the radiator while the fans are going (not touching it or the engine obviously) when the engine is idling at normal engine temperature? You feel hot air and that's what the Injen so-called CAI system is pulling into your engine, hot air...bad for performance. Just my .02 cent since the subject was brought up again for the 100 gazillionth time!

As for me, I'm staying all stock...its the best set up you can have. The stock air box totally isolates the filter from the very hot engine temperatures. Additionally, open air intakes really don't show its effectiveness up until the high RPM ranges and our VQ motor performs at its best in the lower to mid RPM ranges. So why spend all that money on open air intake systems when there's really no performance/hp gains that are truly useable. Who would have thought that a large number of Maxima enthusiasts would be driving their family sedans above the 100 mph mark or be trying to hit the local drag strip boasting NOS or S/C systems. It takes more than just bolting on an aftermarket intake alone to see a real performance increase out of these engines. It'll take way more money and time to accomplish that. I'm just a little different from most people who like the open air intake setups for the sound of it. What's the point in trying to mimic a sound of a true high performance machine when you don't have the HP to back it up, its like a small mutt with all barks but no bite.
Old Jul 28, 2003 | 06:26 PM
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nuff said...
Old Jul 28, 2003 | 06:32 PM
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Originally posted by 2DaMax
In my opinion (just an opinion so don't jump all over me), based on what I have researched in so many threads and discussions in this forum, the only true CAI system is the one that routes the air filter under the battery tray, I think that's the PR kit. If you ever look in there, that area is completely isolated from the engine compartment and that is a perfect place for a CAI filter to sit in. You can then cut a 3" hole into the plastic shield below it to allow more air flow. Some people have removed their foglamps in exchange for better cool air flow. But it's been proven based on people's feedbacks that the peformance gain is still minimal and up at the higher RPM ranges. The Injen is really not a true CAI system because it still draws air inside the engine compartment behind the radiator. Contrary to a real CAI system, the real one routes the airfilter in a totally isolated area away from any possibility of injesting hot air into the intake system while it only sucks nothing but cooler outside air in. I guess that's why they came up with the name Injen = injest hot air into your engine....j/k! Have you ever put your hand behind the radiator while the fans are going (not touching it or the engine obviously) when the engine is idling at normal engine temperature? You feel hot air and that's what the Injen so-called CAI system is pulling into your engine, hot air...bad for performance. Just my .02 cent since the subject was brought up again for the 100 gazillionth time!

As for me, I'm staying all stock...its the best set up you can have. The stock air box totally isolates the filter from the very hot engine temperatures. Additionally, open air intakes really don't show its effectiveness up until the high RPM ranges and our VQ motor performs at its best in the lower to mid RPM ranges. So why spend all that money on open air intake systems when there's really no performance/hp gains that are truly useable. Who would have thought that a large number of Maxima enthusiasts would be driving their family sedans above the 100 mph mark or be trying to hit the local drag strip boasting NOS or S/C systems. It takes more than just bolting on an aftermarket intake alone to see a real performance increase out of these engines. It'll take way more money and time to accomplish that. I'm just a little different from most people who like the open air intake setups for the sound of it. What's the point in trying to mimic a sound of a true high performance machine when you don't have the HP to back it up, its like a small mutt with all barks but no bite.
Why dont you race a maxima with an Injen CAI and you go stock see how that turns out
Old Jul 28, 2003 | 07:47 PM
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I went from a Stillen intake to an Injen. I have a 1996 auto. The 1st thing I noticed was "D@MN!!!! This thing looks fuc#in good. What a beautiful intake. All the PR CAI's I've seen look so primatively put together. Like you went to Home Depot and pieced it together. The 2nd thing I noticed was at idle the car sounds the same until you get to the drivers side and hear a distinct hollow breathing sound. From a stop there is no noticeable difference. But floor this thing from about 30 to 60mph and acceleration seems smoother, less restricted, and a bit quicker. Theres definately something different going on under the hood. It sounds about the same as my Stillen so I don't think it's just my imagination. But others have stopped me and asked how I got my car to sound soo good. Just my .02 cents.

Here's my 5yr old daughter's input. Her opinion probably counts more then mine on this board and will finally put the Injen discussion to rest once and for all.

I drove up in the driveway after putting in the Injen and my daughter Faith said this:

Faith: Wow dad!! Your car sounds like Brians!

Me: Who? (with a dumb look on my face)

Faith: Brians!

Me: Brian? Who's Brian?

Faith: From Fast and the Furious, Dad.


So if you want your car to sound like Brians...get an Injen.
Old Jul 28, 2003 | 08:27 PM
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I need nawz.. and I need it by tonight...
Old Jul 28, 2003 | 08:35 PM
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Would driving with an Injen CAI in the rain be bad? I hope not!
Old Jul 28, 2003 | 08:58 PM
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I read this at another thread that you posted at, it made me giggle a little. She's got keen ears for sound.


Originally posted by C3nthusiast
Here's my 5yr old daughter's input. Her opinion probably counts more then mine on this board and will finally put the Injen discussion to rest once and for all.

I drove up in the driveway after putting in the Injen and my daughter Faith said this:

Faith: Wow dad!! Your car sounds like Brians!

Me: Who? (with a dumb look on my face)

Faith: Brians!

Me: Brian? Who's Brian?

Faith: From Fast and the Furious, Dad.


So if you want your car to sound like Brians...get an Injen.
Old Jul 28, 2003 | 09:14 PM
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Originally posted by HarrisH
Would driving with an Injen CAI in the rain be bad? I hope not!
i've driven in flood situations and in extreme blizzard situtations and all i get is a few droplets.. no major moisture.
Old Jul 28, 2003 | 09:48 PM
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Read this thread which discussed the fact that open air intake systems do not really provide hp gains...it's been track proven by Dave B and Street Reeper. Street Reeper went to two different drag strips, 1/8 and 1/4 mile. Avg. times with stock resonator were .12 faster than the mid-pipe in the 1/8 mile. Avg. times with stock resonator were .18 better in the 1/4 mile. As a matter of fact, the midpipe which is incorporated in these open air intake kits made the car run slower because it doesn't have an air buffering characteristic that the stock intake resonators provide. That growl sound you get when you mash on the accelerator is actually coming from the midpipe. You can remove the midpipe and replace it with the stock intake resonator but the sound of the Injen intake that seems to get everyone all excited will go away. Everyone else with open air intakes took out their midpipe and put the stock resonators back in and got back some low end. I know the thread focused more on the midpipe but when you get the Injen or other full intake kits, they will come with the same type of midpipe.

Originally posted by dss42

Why dont you race a maxima with an Injen CAI and you go stock see how that turns out
Old Jul 28, 2003 | 10:05 PM
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So then why does my car feel like it's performing a little better. And why have Dyno results from Injen and Frankencar shown otherwise, I do agree that the gains aren't phenomenal but I mean it's better than stock.
Old Jul 28, 2003 | 10:11 PM
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if these manufactures are selling their product by means of false advertisement they can be liable for any lawsuits made to their company.
Old Jul 28, 2003 | 10:15 PM
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The whole point of that thread is Stock Resonator VS. Midpipe, not Stock air box VS. open filter element.
Old Jul 29, 2003 | 02:47 AM
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on the frankencar you can put the stock midpipe resonator back on.. but what about with the Injen? I think I shall try tomorrow.
Old Jul 29, 2003 | 10:26 AM
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I may read this wrong. That tread mentions the hacked stock intake holds better on the low end during hot whether while the mid pipe holds better on the high end under the same conditions, then again not every one of us drives on the top end every day. I have asked questions comparing the hacked stock intake to a CAI. There was no response. In that case, I guess there is no data or there was no test done on it.

Since, there are no data. No matter how one’s good theory may sound. It will not hold water, if there is no data or physically feel of the different between the stock and the CAI.



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