Intake FAQ

[atom519]

Originally Posted by pd0019

i didnt cut my fender well w/ my injen CAI


i have a question...anyone experiencing weird rpmsw/ their injen CAI. i have noticed that at night as i come to a stop my rpms will drop to 500 then shoot up to 1000 and then come to rest at 700?

any ideas

Hi guys, first time poster here. Wanted to see if anyone else had more information on the above problem.

I just installed my Weapon-R Secret Weapon intake on my Si, and am noticing exactly what was posted above. Installation went smooth, had a mechanic buddy helping me out the entire time. We forgot to reset the battery before doing the install, but I have since then - to let the computer adjust to the new intake settings and what not.

I was hoping that the idling problem would have stopped by now, as I have driven it around for a solid 45min since installation. Does anyone know how long it takes for the computer to adjust?

Basically, it drops down to just below 500rpm when sitting at a red light or just starting it up....and then jumps to around 1700rpm and then back down. It seems pretty random when it will start to do this, but it will repeat the process about 5 times before sitting at the appropriate 700rpm.

Thanks in advance for any info, I can't seem to find any information about this and I'm concerned about my car!

[Bombero]

I say Eight more HP is NOT WORTH the trouble..... IMO
Cold air intakes are a waste of money ..... IMO of course

[gomezra04]

Anyone know if the Fujita Short Ram has any problems? Looking to put one on the 07 4Dr.

[06blaksi]

Originally Posted by gomezra04

Anyone know if the Fujita Short Ram has any problems? Looking to put one on the 07 4Dr.

I heard they were pretty good....do a search, you'll find alot of happy customers

[slostjoe]

I would go with fujita or injen i have injen and i have alot of hesitation problems. K&N is where i have heard alot of problems

[crazyj]

May I add to this post?

When I first bought my car (Civic Si 2006) I purchased an Injen CAI intake. I also have a ScanGuageII (It tells me the air intake temperatures, among other things). Recently I have gone back to the stock intake and here's what I've noticed....

The stock intake runs about 25 degrees hotter than the outside temp displayed on the dashboard.

The Injen CAI ran 15 degree hotter than the outside temp displayed on the dashboard. (My CAI was also wrapped with heat resistant/reflecting material)

I also ran my Civic Si with the stock air cleaner but without the added hoses before the air filter box. Then the air intake temp was always around 120-130 degrees on a 60-70 degree day (not good!).

Anyways, back to my original point. The stock Intake and the Injen both do their part in sucking in cooler air. Unfortunately the stock air intake has a lot more bends and piping for the air to go through. And unfortunately the Injen CAI is a pain in the arse to install and also to change the air filter.

I'm back on the original intake and I am loving it.

I hope this helps someone somewhere

-J

[DakidzSi]

I've just installed a AEM CAI and I have no problems YET! Just remember to reset your ECU before you decide to just go out and start racing.

I would recommend removing the bumper so that when you go to take the resonator out it's a whole lot easier. Cleaning your filter won't be a problem either cause you have access througth the wheel well.

[DakidzSi]

When reseting the ECU I removed the negative terminal of the battery for about 10 minutes and reconnected it. After letting the car idle for about 15-30 minutes (about 2 fan cylces with hood closed) you should see your idle steady up.

[royer366]

Am I looking @ this correct? Max HP is 189? 2007 SI stock puts out 197hp @7900rpms'

[slow4drsi]

Originally Posted by gomezra04

Anyone know if the Fujita Short Ram has any problems? Looking to put one on the 07 4Dr.

i have a fujita , its a very good product it comes with everything u need with installation pics too , sounds good u can feel some gains .. but when it get's really hot u can feel the lost of power too , i got a couple of experiments....modified stock airbox

check that out

[StealthRacer808]

Originally Posted by royer366

Am I looking @ this correct? Max HP is 189? 2007 SI stock puts out 197hp @7900rpms'

I believe the 189hp is at the wheels. The 197hp you would be reffering to is brake horsepower which is the power the engine makes before losing some through trasmission, etc. But what do i know...I've never modded anything before...

[Zeuceone]

Originally Posted by StealthRacer808

I believe the 189hp is at the wheels. The 197hp you would be reffering to is brake horsepower which is the power the engine makes before losing some through trasmission, etc. But what do i know...I've never modded anything before...

correct. 197 at the flywheel.

[StealthRacer808]

Does anyone know which intake gives the most gains and/or is the most quiet? I'm sure its been asked before but I couldn't find it through searching. I was thinking Comptech or Mugen but idk what the hell is going on with Comptech, and Mugen is too expensive. So aside from those two intakes which would I be looking for? If anything I won't be modding til at least next summer so maybe Comptech will release the icebox by then. As far as performance upgrades the only thing I was planning to do within the near future (a couple of years) would be intake/exhaust as long as they arent too loud or ricey. Mostly because I'm in high school and I don't have much money...

[Stampeed Valkyrie]

Unfortunately doing an intake and an after market exhaust is going to make your car sound ricey. The intake will make the engine louder, and combined with the exhaust will make the exhaust louder. I currently like how my SI sounds AS-IS its not too ricey and the motor is loud enough. I have been contemplating a K&N SRI but I am wary of an increase in engine compartment noise. I had an 05 Civic EX with a K&N SRI which wasn't too bad, I added a Magnaflow Catback and it was unbearable.

[06blaksi]

Originally Posted by Stampeed Valkyrie

I had an 05 Civic EX with a K&N SRI which wasn't too bad, I added a Magnaflow Catback and it was unbearable.

wow....and thats probably the quietest combination you can have.....you must hate noise

I had a Skunk2 with Injen CAI and it was too loud for me but the Magnaflow made it close to stock in terms of loudness but deeper

[StealthRacer808]

Originally Posted by Stampeed Valkyrie

Unfortunately doing an intake and an after market exhaust is going to make your car sound ricey. The intake will make the engine louder, and combined with the exhaust will make the exhaust louder. I currently like how my SI sounds AS-IS its not too ricey and the motor is loud enough. I have been contemplating a K&N SRI but I am wary of an increase in engine compartment noise. I had an 05 Civic EX with a K&N SRI which wasn't too bad, I added a Magnaflow Catback and it was unbearable.

So an Icebox (Comptech/Mugen) combined with a softer exhaust like a Tanabe Medallion Touring or Concept-G (which are both claimed to be under 93db) will still sound ricey? If it turns out that Mugen will be my only non-ricey-sounding intake option after I wait another year for Comptech Icebox to come out maybe I'll just shell out that ridiculous $800 for an intake...I really don't want that ricey sound from the CAIs and SRIs out there...I just want the engine note to be a little meaner, but not that much louder. Is all this too much to ask? Does this plus the 5whp not justify the $800 for the Mugen? Opinions please thanks. BTW, I have an SI sedan, and the only part about the sound I don't like is that between 2k and 3k its a little annoying. Its just droning, louder than under 2k, but not good sounding like above 3k.

[HondaFREAK]

Originally Posted by FG*SQUAD Nick

there is a DIY for a bypass on the CAI search is your friend $20

AEM makes a bypass valve. check their website

[thomasorallye]

well, since opinions are like aholes, everyone has one, i'll give you mine i had an aem sri for almost 3 months. it wasn't that bad until summer hit. i would hit the gas to leave a red light and almost get hit in the ass cuz my car would bog for almost 3 seconds. i say bog...know the sound of a record being slowed down to stop? that's about it...then, just when you're cussing and bashing your steering wheel...the record starts up and returns to normal rpms...talk about piss ya off. i didn't enjoy driving my car at all. i ditched that piece of garbage and picked up a injen cai. i have had no problems out of it, and love the sound of it, especially at vtec engage. the heat bog may not be as bad up north, but down here in the sticky muggy south, it's horrible! save your money and time and go cai if you feel like you have to mod. hope this helps!

[gomezra04]

Well, we got the Fuijita SRI and I love it. I do notice a power loss when it gets REALLY hot and here in TX it gets hella hot. We are moving to Laredo, TX where it's even hotter so we'll see how it does then. I like the sound when you get on it, sounds nice!!

[chronic si]

i saw this one guy with hondata and an AEM that sounds really nice and deep