Whats the difference? CAI and SRI?

jsp872 · 02-19-2007, 09:37 PM

what is the difference, and what are the pros and cons of each? and which one would you guys prefer?

glennhl · 02-19-2007, 09:53 PM

CAI, pulls cold air from the bumper area like the stock one does, but with less twists and turns.

SRI pulls warmer air from under the hood but has even fewer twists and turns.

Personally, I'd go with the CAI because you lose 1% in power for every 10 degree increase in inlet air temp. The problem is if you drive through a really deep puddle you could hydrolock (destroy) your engine.

***airportguy770*** · 02-19-2007, 10:09 PM

^^^^ That pretty much sums it up. CAI, better performance, slim risk of hydolocking. SRI, peace of mine, and Vtec switchover sounds like sex.

***m1k3*** · 02-19-2007, 10:52 PM

SRI's are louder and much easier to install.

CAI's yield better performance all around.

i personally went with a cai because we get some hot ass summers here in fl

Dillan07 · 02-20-2007, 12:32 AM

does anyone know if aem has a SRI for the r18 yet? last i checked they were still in research and development

D_Braiz · 02-20-2007, 04:35 PM

I ave a AEM short intake on my SI 2006 and, this summer on a 30's day, my engine check lights up. It was in the first week after the installation. Few days after ; nothing more. The ECU seems to be adjusted by it self. But wait for the long intake if you do not rides in wather...!?

By
Daniel

SiCop · 02-20-2007, 07:17 PM

I have the K&N SRI as I got it for free from my brother who owns a shop. Sound is really good - have not driven the SI in the summer yet so don't know if heat soak will be an issue. I'm up in the northeast and it doesn't usually get that hot during the summer - who knows.....

Drew_FG2 · 02-20-2007, 10:35 PM

I have the SRI, it sounds so amazing...Will probably get the CAI though.

***sh33t_0f_p4p3r*** · 02-20-2007, 11:33 PM

or wait for comptech coldair box?

jsp872 · 02-21-2007, 01:39 PM

Quote:

Originally Posted by sh33t_0f_p4p3r

or wait for comptech coldair box?

what is a coldair box?

rmfa · 02-21-2007, 01:51 PM

Quote:

Originally Posted by D_Braiz

I ave a AEM short intake on my SI 2006 and, this summer on a 30's day, my engine check lights up. It was in the first week after the installation. Few days after ; nothing more. The ECU seems to be adjusted by it self. But wait for the long intake if you do not rides in wather...!?

By
Daniel

Wow, you actually signed your name to that!

flsedan07 · 03-10-2007, 11:41 AM

if you have more air going in wouldn't you need a biger exhaust to allow more air out to take advantage of the cai? Also, is it true the cai allows more particles to pass with the higher volume of air passing through which can' be a good thing

smatts · 03-28-2007, 02:38 PM

I am also researching getting either a CAI or an SRI, but being a total car noob and wanting to do my first real DIY, I'm leaning towards the K&N Typhoon SRI Kit. In the end I'm jus twanting my car to growl a bit and if it adds a few HP that's a bonus. Living in the pacific Northwest (Vancouver, Canada) I think hydro locking could be a real issue that could occur, especially with all the potholes and puddles that form up in the rainy season. The summers here don't get *that* hot so I think my mind is made up :)

jdrumstik · 03-28-2007, 02:52 PM

Quote:

Originally Posted by smatts

I am also researching getting either a CAI or an SRI, but being a total car noob and wanting to do my first real DIY, I'm leaning towards the K&N Typhoon SRI Kit. In the end I'm jus twanting my car to growl a bit and if it adds a few HP that's a bonus. Living in the pacific Northwest (Vancouver, Canada) I think hydro locking could be a real issue that could occur, especially with all the potholes and puddles that form up in the rainy season. The summers here don't get *that* hot so I think my mind is made up :)

Same thing here in Idaho, POS roads with potholes and lots of metling snow = Hydrolock. In Califronia I'd prolly go CAI, but here its SRI, anyways never gets above 85 degree.

Also I think the K N has a kit that pulls air from the CAI ducting that comes stock with the civic anyways, just sits it right in front of the tube or something. Not sure though, so it on a KN DIY on the site.

rmfa · 03-28-2007, 03:26 PM

Quote:

Originally Posted by airportguy770

^^^^ That pretty much sums it up. CAI, better performance, slim risk of hydolocking. SRI, peace of mine, and Vtec switchover sounds like sex.

Go SRI. You won't regret it. Make sure to get the K&N SRI because it works with the factory cold-air system. I've driven the heck out of my car in 82+ degree Texas heat and I have not noticed any heat soak....

Skylinegtr06 · 03-28-2007, 09:21 PM

Which ones are carb exempt?

ABM JDM · 03-31-2007, 12:34 AM

CAI is the way to go for performance... don't worry so much about hydrolocking. I have an Injen CAI and it is pretty much encased on all sides by protection - bumper, fender, etc... and it's far enough off the ground that you pretty much have to drive into a large enough puddle that you'd almost be hydroplanning in order to hydrolock. I also bought Injen's Hydroshield just for some added insurance. The only way I'd hydrolock is with full submersion for an extended period of time. Supposedly it doesn't adversely affect performance, either.

(EDIT) Thought I'd throw in a pic of my Hydroshield... nothing short of immersion is getting through this thing:

axtran · 04-01-2007, 01:47 AM

So far all that I have noticed was the K&N SRI being CARB-EO Certified. Sadly for me, it does not exist yet for my 2007 Si Sedan, while it will probably just drop in and fit I want to make sure it gets CARB-EO legalized first.

02-19-2007, 09:37 PM	#1 (permalink)
jsp872 Senior Member Join Date: Feb 2007 Posts: 157 iTrader: 0 / 0%	Whats the difference? CAI and SRI? what is the difference, and what are the pros and cons of each? and which one would you guys prefer?

02-19-2007, 10:52 PM	#4 (permalink)
*m1k3* t('.'t ) Join Date: Aug 2005 Location: Jax, FL Age: 19 Posts: 1,561 Mike iTrader: 2 / 100%	SRI's are louder and much easier to install. CAI's yield better performance all around. i personally went with a cai because we get some hot ass summers here in fl __________________ 06 FG1 LX MT AEM CAI \| Magnaflow Cat-Back \| Comptech SS \| TWM Bushings \| Eibach Prokit \| Enkei Evo 6

03-31-2007, 12:34 AM	#17 (permalink)
ABM JDM Senior Member Join Date: Feb 2007 Location: Indianapolis, IN Posts: 328 JDABM fan iTrader: 0 / 0%	CAI is the way to go for performance... don't worry so much about hydrolocking. I have an Injen CAI and it is pretty much encased on all sides by protection - bumper, fender, etc... and it's far enough off the ground that you pretty much have to drive into a large enough puddle that you'd almost be hydroplanning in order to hydrolock. I also bought Injen's Hydroshield just for some added insurance. The only way I'd hydrolock is with full submersion for an extended period of time. Supposedly it doesn't adversely affect performance, either. (EDIT) Thought I'd throw in a pic of my Hydroshield... nothing short of immersion is getting through this thing: Last edited by ABM JDM; 04-01-2007 at 05:40 PM.

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02-19-2007, 09:53 PM	#2 (permalink)
glennhl Member Join Date: Feb 2007 Location: Chandler, AZ Posts: 40 Glenn iTrader: 1 / 100%	CAI, pulls cold air from the bumper area like the stock one does, but with less twists and turns. SRI pulls warmer air from under the hood but has even fewer twists and turns. Personally, I'd go with the CAI because you lose 1% in power for every 10 degree increase in inlet air temp. The problem is if you drive through a really deep puddle you could hydrolock (destroy) your engine.

02-19-2007, 10:09 PM	#3 (permalink)
*airportguy770* VIP Member Join Date: Jun 2006 Location: Stockbridge,GA Age: 25 Posts: 9,413 Dave iTrader: 11 / 100%	^^^^ That pretty much sums it up. CAI, better performance, slim risk of hydolocking. SRI, peace of mine, and Vtec switchover sounds like sex.

02-20-2007, 12:32 AM	#5 (permalink)
Dillan07 Senior Member Join Date: Feb 2007 Age: 20 Posts: 154 iTrader: 3 / 100%	does anyone know if aem has a SRI for the r18 yet? last i checked they were still in research and development

02-20-2007, 04:35 PM	#6 (permalink)
D_Braiz Junior Member Join Date: Feb 2007 Posts: 2 iTrader: 0 / 0%	I ave a AEM short intake on my SI 2006 and, this summer on a 30's day, my engine check lights up. It was in the first week after the installation. Few days after ; nothing more. The ECU seems to be adjusted by it self. But wait for the long intake if you do not rides in wather...!? By Daniel

02-20-2007, 07:17 PM	#7 (permalink)
SiCop Member Join Date: Dec 2006 Posts: 74 iTrader: 0 / 0%	I have the K&N SRI as I got it for free from my brother who owns a shop. Sound is really good - have not driven the SI in the summer yet so don't know if heat soak will be an issue. I'm up in the northeast and it doesn't usually get that hot during the summer - who knows.....

02-20-2007, 10:35 PM	#8 (permalink)
Drew_FG2 Junior Member Join Date: Jan 2007 Location: Mesa, Arizona Posts: 26 Drew iTrader: 0 / 0%	I have the SRI, it sounds so amazing...Will probably get the CAI though.

02-20-2007, 11:33 PM	#9 (permalink)
*sh33t_0f_p4p3r* Ears bleed at 70mm Join Date: Jan 2007 Location: North Port, Florida Age: 22 Posts: 3,123 Tobie iTrader: 1 / 100%	or wait for comptech coldair box?

03-10-2007, 11:41 AM	#12 (permalink)
flsedan07 Senior Member Join Date: Jan 2007 Posts: 135 iTrader: 0 / 0%	if you have more air going in wouldn't you need a biger exhaust to allow more air out to take advantage of the cai? Also, is it true the cai allows more particles to pass with the higher volume of air passing through which can' be a good thing

03-28-2007, 02:38 PM	#13 (permalink)
smatts Senior Member Join Date: Feb 2007 Location: Montreal, Canada Age: 31 Posts: 1,307 Matt iTrader: 0 / 0%	I am also researching getting either a CAI or an SRI, but being a total car noob and wanting to do my first real DIY, I'm leaning towards the K&N Typhoon SRI Kit. In the end I'm jus twanting my car to growl a bit and if it adds a few HP that's a bonus. Living in the pacific Northwest (Vancouver, Canada) I think hydro locking could be a real issue that could occur, especially with all the potholes and puddles that form up in the rainy season. The summers here don't get that hot so I think my mind is made up :)

03-28-2007, 09:21 PM	#16 (permalink)
Skylinegtr06 Senior Member Join Date: Jul 2006 Location: Chula Vista SD Age: 18 Posts: 5,745 edwyn(male) iTrader: 1 / 100%	Which ones are carb exempt?

04-01-2007, 01:47 AM	#18 (permalink)
axtran Junior Member Join Date: Feb 2007 Location: Garden Grove, CA Posts: 9 Andy iTrader: 0 / 0%	So far all that I have noticed was the K&N SRI being CARB-EO Certified. Sadly for me, it does not exist yet for my 2007 Si Sedan, while it will probably just drop in and fit I want to make sure it gets CARB-EO legalized first.