there all over Focus Sport...

I just put in my Cossy CAI... and trust me, you dont notice it so much in 1 and 2 gears... but there is a decent change in acceleration in 3 4 and 5!

You feel it in 1 and 2 but just not a whole lot, BUT DEF WORTH THE MONEY!!!!

 

*s*e*a*r*c*h*

 

Hell, I'd get it for the sound alone if there were no HP gains.

 

*s*e*a*r*c*h*

^^^ *r*u*d*e*

 

I installed my f2 cai a week and half or so ago, and I can DEFINITELY notice the difference! And the sound is AWESOME! Good luck!!! :thumbup:

 

I just put a Marcy Motorsports CAI on my 2005 ST and I agree with CaysE 100%. The cool-ass whistling psuedo-boost sound makes it worthwhile. It does add a little more noticeable power especially in 3rd gear for me.

 

they work and are worth the money one of the best things to do to a stock focus is either intake or exaust

 

Marcy netted a gain of 8 HP at the wheels when replacing the PZEV's sealed, "lifetime" air cleaner assembly with a cold air intake and with the removal of the PZEV's hydrocarbon trap from the top of the MAF housing on a manual trans 2.3 Duratec hatch.

The 2.0 Duratecs have a long snorkel from the filter assembly down in the front bumper that leads almost to the firewall; that's almost 3 feet of restriction there. I think that was to prevent "hydrolocking" the engine if the car was driven through axle-deep water.

Either way, the 2.3 PZEV Duratecs didn't have that snorkel, so the gains on the 2.0s should be at least 5 HP at the wheels. That's a significant percentage improvement.

 

how much of the warranty is voided when yanking that lifetime filter out of there and replacing it with the CAI .. had a semi-savvy car guy tell me that the entire powertrain warranty would be voided due to the lifetime nature of that part ...

 

Not true. It's illegal for them to void the entire warranty because of one part. They can only refuse warranty coverage if they can prove that the part you changed caused a problem.

For instance, they can refuse to fix your engine if you hydrolock it because it's possible that it occured because of your modified intake. They can't refuse to fix it if you spin a rod bearing, because there's no way that occured because of the intake.

 

The 2.0 Duratecs have a long snorkel from the filter assembly down in the front bumper that leads almost to the firewall; that's almost 3 feet of restriction there. I think that was to prevent "hydrolocking" the engine if the car was driven through axle-deep water.

My ST had that too. The factory air handling unit was actually 3 seperate parts. 2 gigantic boxes and a 3 foot snorkel. My snorkel wasn't in the bumper though. It ran up the top of the entire drivers side fender and snapped into place at the base of the windshield cowl. I reassembled the parts outside the car after removal and it looks like you can drive a stock ST through water up to about the base of the mirrors before you drown it completely. I guess that would come in handy if fording rivers was something you would ever do in a Focus...

 

^^mine too, wow what a coincidence, both 05 ST's! Ya it was hugely restrictive and my FS cai rocks.

 

*s*e*a*r*c*h*

I searched and I couldn't find any non-commercial test result. If you read my post, you know that I'm looking for objective data, not observation that is heavily influenced by psychological factors, much like the case of different audio cables. If one makes what is perceived as an improvement, it usually results in a psychological perception of subjective gain "I could feel, notice" etc..

That said, if you can find what I'm looking for, my search skills are you inferior to yours. I challenge you to find it. What I'm looking for:

Objective comparative data between stock vs CAI. NOT stock vs aftermarket exhaust system(including manifolds) + CAI.

 

I think you'll have trouble finding that. No one who doesn't sell an intake setup is going to waste money dynoing their car before and after such a minor mod. You can either trust a dyno from someone with a vested interest in selling you an intake, or you can trust dozens upon dozens of people who report a major, noticeable difference and the fact that no one has ever installed one and then reported back without feeling a substantial power increase.

Edit: Or I can dig through the piles upon piles of magazines I have here until I find that issue of Focus Fanatic where they tested before and after each tiny mod, but that would be for a 2.3.

 

...I'm looking for objective data, not observation that is heavily influenced by psychological factors...

When the amount of "psychological observation" is particularly high and overwhelmingly one-sided, it becomes objective data.

 

Ok I did the Dyno runs on my "Stealth CAI" and pulled 118whp and 122wtq on a 2.0L Duratec.
This intake cost me $25.00.

I did not do before Dyno runs on the stock engine but "Focus Fanatics Magazine" did, and they got 112whp from a stock 2.0L Duratec.

So based on my results a 6whp or more gain is likely from just a CAI.

Some where on here or Focusfanatics.com are the actual Dyno charts, I just don't have time to find them now.

 

Ok I did the Dyno runs on my "Stealth CAI" and pulled 118whp and 122wtq on a 2.0L Duratec.
This intake cost me $25.00.

I did not do before Dyno runs on the stock engine but "Focus Fanatics Magazine" did, and they got 112whp from a stock 2.0L Duratec.

So based on my results a 6whp or more gain is likely from just a CAI.

Some where on here or Focusfanatics.com are the actual Dyno charts, I just don't have time to find them now.

That's just a mere 5% separation from two different data points and could fairly well be caused by something other than CAI depending on if the dyno readings are corrected or not for atmospheric conditions.

There's about 4% decrease in horsepower for every 1,000' in altitude...
http://4wheeldrive.about.com/gi/dyn...&sdn=4wheeldrive&zu=http://performanceunlimited.com/documents/altitudefact.html

For example...
data #1: Boulder, CO, 5160ft,
data #2 Portland, OR ~sea level

Neither places are unreasonable.

 

Is finding this information really that important? Is it going to change your decision on whether or not to purchase an intake if you find out it's only 6whp instead of 8whp?

The gain is there. I just don't understand why it's so important to have a person unaffiliated with any company show you a before/after dyno of just a CAI. :dunno:

 

yeah, the fear of the purchase is that it won't be noticable, but if you plan on any future mod, the intake will become a huge restriction.

I understand why one would hesitate to purchase cai alone, but even with cheap exhaust, i imagine a CAI really compliments the power gain.

 

Is finding this information really that important? Is it going to change your decision on whether or not to purchase an intake if you find out it's only 6whp instead of 8whp?

The gain is there. I just don't understand why it's so important to have a person unaffiliated with any company show you a before/after dyno of just a CAI. :dunno:

agreeed
just do it because if you add any other mod to your car besides exaust you will be limiting your air intake into the cylinders.
so if you plan on anything at all it is a must. i will give you a ride in my friends next time we are at a g2g and trust me you FEEL difference.

 

I honestly think you will get the biggest gain from the Cossy CAI, cause its the only "True" CAI, and not to take away from anyone elses engineering... but I extreamly like the performance of the Cossy CAI, Plus if you were going to get some major mods, like cams or something else that would need you to dyno tune your car, you can take out the restrictive ring and get even more HP out of it... so in the long run I would say Cossy is your best choice but I am sure someone will disagree with me...

 

You know... I just don't get it. This is like the oldest news in the focus world. Use the search function and look for a single report in the last 3 years of a CAI not producing the gains claimed or expected. You won't find a single one.

Most people thing 10hp 10tq for $300 or less is an incredible thing. Yet Duratec + CAI delivers just that, uncontested. It's not rocket science. Look at the stock intake for crying out loud. It's like trying to breath through a straw. Getting 10hp more then the stocker ought to be pretty easy.

So why all the disbelief about an aftermarket intake not delivering the goods? You wanna mod a duratec? Then you want a CAI. PERIOD. Stop the fussing and go spend your money already. Sheesh!

(Thought this thread would be dead already. :lol

 

I honestly think you will get the biggest gain from the Cossy CAI, cause its the only "True" CAI,

Under_rated, I disagree with your comment that there's just one "true" CAI (Cold Air Intake). You will explain. LOL. The Cosworth CAI's filter and tubing inlet is in the same spot as Marcy's, FocusSport's and F2's are, which is down in behind the left front bumper/fascia. A "truer" CAI would sit in direct, cool airflow proper.

Now Cosworth's stuff is absolutely top-drawer, that's for sure, and theirs is the only CAI currently available that has a CARB (California Air Resources Board) E.O. (Executive Order) number; in other words, it's CARB-legal and therefore will not get your car impounded, even confiscated, for tampering with it's emissions equipment by installing it on a Focus registered in California and perhaps other "Green States" (New York, Vermont, Massachusetts and New Hampshire).

You say you "extremely" like the performance that piece gives you. Have you had any other CAIs on your car? If so, which ones? The other cold air intakes advertised for sale on [FJ]focaljet produce similar gains.

The restrictive "ring" you speak of is there for a reason; that's to develop similar airflow velocities to what's found going over the stock MAF (Mass AirFlow) tube's sensor. If your Duratec is built to flow what amounts to something over 200 HP naturally aspirated, then that ring can be replaced with another, slightly less restrictive one. It is never removed entirely.

You will pardon me if I sound a little harsh, but facts are facts.

:thumbup:

 

It's NOT removed entirely??!! Really? I didn't realize that. You sure about that Z63R?

 

Oreo

You sure about that Z63R?

Not for any street-driven power levels... but to be absolutely sure on this one, Ken at Cosworth ([FJ] username HIREV) should comment.

Thanks for asking. I wanna keep my fact0ids straight...