^^+1 i agree. CAI should be called MoreAirIntake... there is nothing cold about it....

as far as no cats go. ive never had anyone complain. and the only time i smell it is when i stand near the exhaust with the car on. the only thing that does suck its getting that stupid SES light off. damn codes!!

 

I got the dreaded SES with a high flow CAT after a few days of driving. I installed 2 spark plug anti-foulers on the O2 sensor. It's never been back since

By the way, I have a high flow CAT and a cold air intake, anything that helps the engine "breathe" is a good thing !!

 

I dont know of ANY real dyno numbers that say 15-20HP with a CAI. You will however get more HP due to the less restrictive air filter.

 

and to leaning out the air fuel mixture.

that is a result of the intake, but not the design of it.

 

I had a catless evo VIII. catless ducati, catless neon, all of which smelt like normal cars. No clue what you guys experienced maby my nose is broke but no way does it smell like a 2 stroke.

 

Do you have any kind of tune on the ECU? I know with the Cobb AccessPort, the warnings can be turned off or cleared at will. Either way, I would be interested in knowing how you installed the sparkplug anti-foulers on the O2 sensor to clear the SES. Pics of the intall would be awesome.

 

just to settle, mil.spec high flow cats are at best only 5 hp short of being catless and still legal and able to pass inspection dyno proven. But id still do the cold air intake first but thats just me id rather do my full exhaust at once. Id reccomend perrins cold air intake.

 

Here's a question for ya folks. Let's say you are on your way to work (not a mechanic shop of any kind) and you are sitting at a stop light with the windows up (if your windows were down, obviously you would smell it at whatever degree your schnoz can detect it). The wind brings the exhaust fumes back towards the car.

Do you smell the fumes in the car with the windows up? A little? A lot? Not at all?

Okay fine. Assuming you hit more than one stop light or sign during your daily commute and you have your air conditioner pulling outside air. Does your deo/cologne/body spray smell more like fumes than your favorite Axe flavor by the time you arrive at work?

I am not poking fun here. I am seriously curious about everyone's total experience with this issue.

 

i smell nothing with my mil.spec hfc.

 

Do you know if Perrin makes a CAI for the 09 Ralliart? If so, please post a link, I can only find it for the Evo X or under. Thanks.

 

Found a good discussion confirming Skott2k's comments about the mil.spec HFC vs. the test pipe.

https://www.evolutionm.net/forums/ev...-cell-cat.html

 

having to install 2 or 3 anti-foulers is not only a pain, but it gets expensive if you have to keep adding more or replacing due to rust and such, there's not a lot of room if you need 2 or more for your setup, and it just looks hideous, in my opinion. i personally use, and recommend, a more simple and easily adjustable fix that looks a lot less terrible too:

http://cgi.ebay.com/ebaymotors/UNIVE...item20b0417bd7

i just want to say that i am not the seller of this, nor do i work with/for them, i just fully believe in personal experience and quality. it's made of legit stainless steel and the 90 degree bend is the key factor here, mainly because its ideal for adjustability depending on flow requirements. instead of drilling or adding to the spark plug anti-foulers, with this, all you do is rotate the angle upstream or downstream depending on what type of flow you have so you can keep both of the cel's away for both catalyst efficiency and 02 signal requirements.

it also seems that the price has gone up, probably because now that summer is here, mod season has come and there's a higher demand. i personally got mine in february for 24.95 plus 4.95 shipping, and now its 49.95 plus the 4.95 for shipping, but if you wait i bet the price will drop, or you can just buy from someone/somewhere else. just make sure it's good stainless steel you're using so it doesnt seize in the exhaust.

 

not knocking the simple version, because i also have experienced that for most applications that appears to be all that is necessary, but the value of the 90 degree style comes in the adjustability. some cars require more than one of those spacers and then the sensors may wig out cause they're not seeing enough flow, say with 2 spacers so they throw a sensor related code, but then too much flow with only 1 spacer throwing the cat code, so you need do drill one out or do other modification to get it to work. also, just for that one in particular, is that true stainless steel? looks like basic corrugated steel that may be prone to rusting/seizing. even with a butt load of anti-seize, exhausts get way too hot for that to even be effective, especially running without a cat, which is why most people need this fix.

to each their own i suppose, depending on use and trial/error you may not need any more than one simple spacer, but if you ever plan on swapping back to the cat for whatever reason or would like some wiggle room in case of adjustment needed later on after more modding and exhaust flow changes, go with some sort of adjustable setup and at least make sure its good stainless steel. if you can find it cheaper, definitely go for it. like i said, i only paid 30 and now its up to 55, so shop around, but the 90 degree style is the most versatile and stainless steel should be a major requirement, in my opinion.

 

Here's a whole thread about it. It's cheap (about $8), and it works !!! For a high-flow CAT you may only need 1, but I installed 2 just in case. The SES light never came back.

https://www.evolutionm.net/forums/ev...cel-light.html

Here's how the finished install looks..

 

perrin does not.

Ultimate racing/ams/injen are the main intake manufacturers. All require a tune to operate properly.