difference between rai and cai

v606er · May 30th, 2008, 12:16 AM

please explain the difference between the rai and cai

WildWill · May 30th, 2008, 11:14 AM

a cold air intake places the filter in a more remote location allowing it to suck colder air... away from the heat of the engine. a ram air intake is basically just a piece of pipe and a filter coming out of your intake. they are pretty useless IMO. even though rai's are cheaper, it's def. worth it to get the cai.

HMUSN · May 30th, 2008, 11:22 AM

rai

cai

v606er · May 30th, 2008, 11:33 PM

Originally Posted by HMUSN

rai

cai

o wow. i guess all the things ive seen are rai's. b/c they all have the filter visible in the engine compartment. but they also have a little heat shield or something around them. how will i know the difference between cai and rai when i ordewr it so i dont get nailed in the ass by someone?

HMUSN · May 31st, 2008, 09:19 AM

it will say either ram air or cai/ fender well

shoot me a pm with a link before you buy it and I will confirm it for ya

v606er · June 1st, 2008, 12:09 AM

Originally Posted by HMUSN

it will say either ram air or cai/ fender well

shoot me a pm with a link before you buy it and I will confirm it for ya

ok thanks

thirblig · June 7th, 2008, 05:23 PM

I didn't catch this thread right away so you may have it all figured out by now but just in case you don't ...

CAI = Cold Air Induction - air is drawn into the engine from an area isolated from the rest of the engine compartment. Those filters you see with the shield around them are CAI systems. The shield reduces the amount of hot air getting to the filter so that cooler air can be drawn in from outside via the space behind the fender. They work with about the same efficiency if the car is moving or standing still.

RAI = Ram Air Induction - outside air is forced into the engine but the vehicle must be moving for this to happen. I'm not sure at which speeds they generally become effective. Ram air systems will usually utilize a functional hood scoop which seals to the intake system when the hood is closed OR they can use ducting to draw air from the front of the car. I've never had one but anything that will force more cool air into your engine is going to add to your power output.

Hope this helps.

C MY 4D · June 7th, 2008, 06:16 PM

Originally Posted by WildWill

a cold air intake places the filter in a more remote location allowing it to suck colder air... away from the heat of the engine. a ram air intake is basically just a piece of pipe and a filter coming out of your intake. they are pretty useless IMO. even though rai's are cheaper, it's def. worth it to get the cai.

The RAIs work well at the track with the passenger headlamp removed.

May 30th, 2008, 11:14 AM	#2
WildWill Hardcore Enthusiast 1995 Mustang GT Join Date: Oct 2007 Location: Solomons, MD Posts: 1,112 iTrader: 0 reviews	a cold air intake places the filter in a more remote location allowing it to suck colder air... away from the heat of the engine. a ram air intake is basically just a piece of pipe and a filter coming out of your intake. they are pretty useless IMO. even though rai's are cheaper, it's def. worth it to get the cai. __________________ GT40p heads, 1.7 crane RR's, GT40 u/l, MAC LTs, MAC o/r h-pipe, Flowmaster 40s, 65mm t/b, '03 Cobra Bilstein Struts, Tokico Bullitt Shocks, MM c/c plates, Eibach Sportlines, B&M shifter, 255lph f/p, RAM p/g clutch, Fidanza alum fly, rebuilt t-5

May 30th, 2008, 11:22 AM	#3
HMUSN Doc 1986 SVO 48.47@ 12.58 Join Date: Nov 2006 Posts: 37,050 iTrader: 11 reviews	rai cai __________________

May 31st, 2008, 09:19 AM	#5
HMUSN Doc 1986 SVO 48.47@ 12.58 Join Date: Nov 2006 Posts: 37,050 iTrader: 11 reviews	it will say either ram air or cai/ fender well shoot me a pm with a link before you buy it and I will confirm it for ya __________________

June 7th, 2008, 05:23 PM	#7
thirblig Newbie 2007 V6 Pony Join Date: Apr 2008 Location: South East Saskatchewan Posts: 7 iTrader: 0 reviews	I didn't catch this thread right away so you may have it all figured out by now but just in case you don't ... CAI = Cold Air Induction - air is drawn into the engine from an area isolated from the rest of the engine compartment. Those filters you see with the shield around them are CAI systems. The shield reduces the amount of hot air getting to the filter so that cooler air can be drawn in from outside via the space behind the fender. They work with about the same efficiency if the car is moving or standing still. RAI = Ram Air Induction - outside air is forced into the engine but the vehicle must be moving for this to happen. I'm not sure at which speeds they generally become effective. Ram air systems will usually utilize a functional hood scoop which seals to the intake system when the hood is closed OR they can use ducting to draw air from the front of the car. I've never had one but anything that will force more cool air into your engine is going to add to your power output. Hope this helps. __________________ 2007 Grabber Orange V6 5 spd w/ Hurst Shifter, 4" aluminum driveshaft, 8.8" rear end w/ trac-loc, XCharger #64

Threads Similar to: difference between rai and cai
Thread	Thread Starter	Forum	Replies	Last Post
CAI vs RAI	HBK_2007	96-98	2	May 4th, 2008 01:40 PM
JLT RAI or CAI?	andres0286	99-04	8	April 29th, 2008 11:23 AM
RAI	OneBoredGuy	4V / SVT	21	February 13th, 2008 09:18 PM
CAI or RAI	Mach Boy	99-04	21	October 12th, 2007 12:13 PM
CAI or RAI?	4point6GT	96-98	3	June 25th, 2006 09:40 PM

Remove Advertisements Sponsored Links
Ford Mustang Forum Advertisement

All times are GMT -4. The time now is 11:11 AM.
Contact Us - Modded Mustangs : Ford Mustang Forums - Privacy Statement - Top
Modded Mustangs is ©2005-2008, All Rights Reserved, And is Not Affiliated with Ford Motor Company. Forum is powered by vBulletin ©2000 - 2012, Jelsoft Ent. Ltd. & SEO by vBSEO 3.3.2 ©2009, Crawlability, Inc.