Cold Air Intakes

[ScaR]

What are some of the best intakes I can get that will give me the most out of the cold air intake

 

[Downsy]

None of them. The stock intake is quite good. Even the ST200 when I was looking at other people's data showed an increase in intake temps over the stock airbox. This could have been due to some other issue such as improper secondary hose routing, but seriously the stock air box is quite good at getting cool air into the engine.

On top of that, most aftermarket "cold" air intakes require the installation of an oiled gauze type filter element. Testing has shown these to allow quite a bit of dirt through. Personally, I'm about keeping as much crud out as possible. Paper element filters when properly sized flow more than enough air even in a forced induction setup and give you far better filtration than oiled gauze. And they're not expensive so the reusability of the oiled gauze elements shouldn't even factor in.

Here's ISO testing data on oiled gauze elements, namely K&N, but for the most part all the oiled gauze and oiled foam filters do about the same.

2009 ISO 5011 TEST OF AIR FILTERS

 

[Zormecteon]

I'm sold on the mountune unit as it draws it's air from the fender well rather than from the engine compartment.
ANY that draw from the engine compartment will be sucking in hot air after the car is warmed up, defeating the purpose.

https://www.mountunestore.com/collections/mk7-fiesta-st/products/induction-kit

But this one looks really neat .. again drawing air from outside the engine area

https://www.mountunestore.com/collections/mk7-fiesta-st/products/carbon-induction-kit-mk7-fiesta-st

 

[ScaR]

I'm sold on the mountune unit as it draws it's air from the fender well rather than from the engine compartment.
ANY that draw from the engine compartment will be sucking in hot air after the car is warmed up, defeating the purpose.

https://www.mountunestore.com/collections/mk7-fiesta-st/products/induction-kit

But this one looks really neat .. again drawing air from outside the engine area

https://www.mountunestore.com/collections/mk7-fiesta-st/products/carbon-induction-kit-mk7-fiesta-st

But would this fit an american car?

 

[ron@whoosh]

What are some of the best intakes I can get that will give me the most out of the cold air intake

cheapest you can find and whatever look you are wanting for the engine bay
the stock / ST200 & mountune box (same thing ST200 is cheaper) will restrict power above 300whp
if you don't plan to upgrade your turbo at some point add an ITG panel filter to your stock box, there is zero gain going to a ST200 or mountune box

upgrade your intercooler, charge air temp where its at, don't worry about intake air temps from a "hot air intake"

 

[Zormecteon]

The first airbox I listed is what I believe fits. The second may be for the 3 cylinder European version. Only correspondence with mountune will tell you for sure. .. as stated above tho I think that without a "tune" the airbox alone will make no performance difference. Again get hold of mountune to know.

 

[M-Sport fan]

The first airbox I listed is what I believe fits. The second may be for the 3 cylinder European version. Only correspondence with mountune will tell you for sure. .. as stated above tho I think that without a "tune" the airbox alone will make no performance difference. Again get hold of mountune to know.

It says Mk7 right in the product description, and shows the (albeit yes), Brit RHD version of our engine bay, which is basically the same as far as the intake goes.

Mountune would just have clear up which of the EVAP piping setups one would need to use with this intake.

 

[dhminer]

Just listen to Ron on this one. If you’re putting an intake for visual appeal, pick the one that looks coolest to you. If you’re planning on upgrading your turbo, then there are some more considerations but it’d basically boil down to ITG or one of the full 3” options (Cobb, CPE) with a giant cone filter instead of the air box. The intercooler has a much greater impact on charge temps than the intake. They’re all going to suck in hot air.

 

[Hazen]

Not to hi-jack the thread, but Im concerned with dirt.
A. I live in a rural dirt road area.
B. I am going to rallycross this car. Mainly that consists of mostly dirt tracks with some tarmac.

In my first Fiesta I owned, it already came with the cobb CAI kit. I was forever cleaning it. Im not oppsed to having to clean the oil type cai filters, but was curious if there was something better?
Build in progress obviously. Planning on:
Stratified stage 2 tune
3" catted down pipe(per SCCA Rallycross rules) + 3" catback exhaust
stock turbo for now.

Thanks

 

[Capri to ST]

Not to hi-jack the thread, but Im concerned with dirt.
A. I live in a rural dirt road area.
B. I am going to rallycross this car. Mainly that consists of mostly dirt tracks with some tarmac.

In my first Fiesta I owned, it already came with the cobb CAI kit. I was forever cleaning it. Im not oppsed to having to clean the oil type cai filters, but was curious if there was something better?
Build in progress obviously. Planning on:
Stratified stage 2 tune
3" catted down pipe(per SCCA Rallycross rules) + 3" catback exhaust
stock turbo for now.

Thanks

I have the Mountune cold air intake and think it's excellent, it's the metal version of the OEM ST200 one. It's the first one that @Zormecteon referred to in Post #3 above. It gives you some nice extra sound, and maybe a bit of extra power,especially when used with a tune, which I have in the MP215.
I want maximum filtration even though I don't live on a dirt road and will not be Rallycrossing the car, so my mechanic came up with a great suggestion. I'm using the OEM paper filters for maximum protection instead of the oiled K&N type filter which came with the kit, but replace them once a year which for me is at about 3,500 Mi. so having them for maximum filtration doesn't compromise airflow by having the filter get clogged up because they are replaced so often. I believe they only cost about $20 at Rock Auto, so it's not a great extra expense. The ST200 CAI came with the OEM paper air filter, so that also gives me a good feeling about using it.

 

[M-Sport fan]

There is also the drop-in aFe washable, but DRY, NOT oiled, panel filter.

No idea if it even claims to flow any better than the Motorcraft factory cellulose deal, let alone if it actually does or not.

 

[Downsy]

I want maximum filtration even though I don't live on a dirt road and will not be Rallycrossing the car, so my mechanic came up with a great suggestion. I'm using the OEM paper filters for maximum protection instead of the oiled K&N type filter which came with the kit, but replace them once a year which for me is at about 3,500 Mi. so having them for maximum filtration doesn't compromise airflow by having the filter get clogged up because they are replaced so often.

FWIW, the ISO testing I referenced earlier in this thread shows the oiled gauze and foam filters clogging up and restricting airflow sooner than the paper element filters. The K&N let 7 grams of dust though and clogged up to the restriction limit in 24 minutes after having between 200 and 300 grams of dirt thrown at it.

The ACDELCO filter only allowed 0.4 grams of dust though and took 60 minutes to clog to the limit after having almost 600 grams of dust thrown at it.

Paper element filters last longer than people think they will. At 3500 miles you're just getting started but given the time frame you're covering that distance, the few dollars for the paper filter isn't a big deal.