COBB MAZDASPEED3 Airbox Kits and SF Intake + Airbox Combos

[Cobb Tuning]

COBB is proud to announce the immediate availability of the COBB MAZDASPEED3 Gen1 and Gen2 SF Airbox and SF Intake + Airbox combos. The SF Intake and Airbox utilize several unique features in an effort to maintain optimal airflow and cooler charge air temperatures. The CFD-designed velocity stack and air flow straightener grid ensure smooth air flow across the Mass Air Flow sensor for precise readings. The composite intake body saves weight, reduces heat transfer, and resists deformation under fluctuating temperatures.

The brand new SF Airbox takes full advantage of the factory cold air feeds while protecting the filter element from under hood engine heat. Utilizing thermoformed ABS plastic to resist engine heat, the SF Airbox fits perfectly into the engine bay. The lid seals tightly with high-density foam for a tight fit with no added vibrations and also features the embossed COBB logo. In testing, intake temperatures have been within 3 degrees of ambient while cruising and delays heat soak up to 18%.

MAZDASPEED3 SF Intake and Airbox Kits are available for both Gen1 and Gen2 vehicles. The SF Airbox is also available separately as an upgrade to your existing SF Intake or to help stage out your upgrade process.

Get the COBB SF Intake and Airbox for your MAZDASPEED3 to add premium style to your engine bay and optimum air flow for unrivaled turbo performance.

COBB MAZDASPEED Gen1 SF Intake and Airbox Kit
Part Number: 771300
MSRP: $389.00

COBB MAZDASPEED Gen2 SF Intake and Airbox Kit
Part Number: 772300
MSRP: $479.00

COBB MAZDASPEED Gen1 SF Airbox
Part Number: 771150
MSRP: $199.00

COBB MAZDASPEED Gen2 SF Airbox
Part Number: 772150
MSRP: $289.00

[ThizSpeed3]

wow, that is nice looking

[3Gee Tee]

I'm glad to see Cobb still making stuff for our platform. Nice work.


Sent from my iPhone using Tapatalk

[jseams]

Kinda pricey for a plastic box isn't it? The genpu airbox is more expensive than the actual cobb sf intake.

[BlckMs3]

Cobb pulls threw once again...now you guys need that 3.5'' intake!

[ThizSpeed3]

Originally Posted by jseams Kinda pricey for a plastic box isn't it? The genpu airbox is more expensive than the actual cobb sf intake.

if its the 1st of something isn't it going to be expensive? nothing to compete against it
the corksport one is just a box, not even comparable ?

[Zoomspeed]

I've seen it personally and looks great

[Chuthor]

Looks really clean installed, its a little on the spendy side, but I'm still interested.

[Mchart]

Seriously nice looking part. Wish this would have been out a while ago before I bought other stuff.

[mwcraven]

Anyone got one on a car yet that could give some feedback?

[tastysi2004]

hmm.. i wonder if with the fmic piping, will it still fit without cutting or customizing the box itself.

[BOTTLEFED08]

Yes I do, My car was the test demo. I love it, it does its job, looks very nice under the hood, and I have the cx racing fmic with no fitment issues.

http://www.mazdaspeedforums.org/foru...combos-127891/

[DiGi Faggot]

Any MS6 love coming?

[XLT_66]

Originally Posted by DiGi Faggot Any MS6 love coming?

No MS6 love planned for this product. Sorry about that. If I could have made a box that fit the Gen1, Gen2, and MS6, it would have been worth it to make a new lid for the 6. However, that wasn't the case.

[jseams]

Originally Posted by BOTTLEFED08 Yes I do, My car was the test demo. I love it, it does its job, looks very nice under the hood, and I have the cx racing fmic with no fitment issues. http://www.mazdaspeedforums.org/foru...combos-127891/

Any change in sound with the airbox installed vs just the SRI?

Fuck it, I'm an impulse shopper. Just ordered it...

[8.5MS3]

will this work with the Amsoil dry filter?

The bracket from my SF intake snapped at the base. does the box get attached anywhere to the car itself?

[BOTTLEFED08]

Originally Posted by jseams Any change in sound with the airbox installed vs just the SRI? Fuck it, I'm an impulse shopper. Just ordered it...

I was told that the box may muffle the sound of the spool a little, but to be honest, it still sounds like a semi coming down the street lol. If it did, only a tiny tiny bit..

Originally Posted by 8.5MS3 will this work with the Amsoil dry filter? The bracket from my SF intake snapped at the base. does the box get attached anywhere to the car itself?

I would contact Evan at Cobb to varify the filter fitment, theres plenty of room in there Im guessing it should but Im not 100% sure.

The main support comes from that SRI bracket, however if your's snapped you can get a replacement piece!

[mingenyx]

Is there a pic of the gen 2 box? Since I know corksports gen 1 sits flush against the headlight area don't know if gen 2 is identical to corksports or flush with the hood area

[8.5MS3]

Originally Posted by BOTTLEFED08 IThe main support comes from that SRI bracket, however if your's snapped you can get a replacement piece!

problem isnt cobb's bracket, its the oem plate that it mounts to

[BOTTLEFED08]

Originally Posted by 8.5MS3 problem isnt cobb's bracket, its the oem plate that it mounts to

Oh ok. Could always engineer a little somethin somethin form Home Depo if you wanted.. I like doing things like that, might work out for someone who has the same issue as well.

[dbrier]

Why the huge price difference between gen1 and gen2?

[XLT_66]

If your mounting point snapped then you'll need to get it rewelded or jb weld it or something.

The Gen1 box mounts using the SF bracket and then is held in place by laying over the top of the headlight trim. Gen2 uses the same bracket but is also held in place by the air inlet hose. They both are very stable under the hood.

The price increase between the Gen1 and Gen2 is because the Gen2 has additional silicone, clamps, and inlet piece to adapt to the factory air inlet coming from the grill.

[Zoomspeed]

Originally Posted by dbrier Why the huge price difference between gen1 and gen2?

When I looked at both it seems like the genpu one has an extra silicone hose that come out the back

[mwcraven]

Originally Posted by BOTTLEFED08 I was told that the box may muffle the sound of the spool a little, but to be honest, it still sounds like a semi coming down the street lol. If it did, only a tiny tiny bit.. !

thats good to hear, that was gonna be my next question

[mwcraven]

Originally Posted by mingenyx Is there a pic of the gen 2 box? Since I know corksports gen 1 sits flush against the headlight area don't know if gen 2 is identical to corksports or flush with the hood area

check the cobb website itself, they have a PDF for intall instructions. It has pics there of what the gen2 version looks like installed

[fortressofcomfort]

Originally Posted by 8.5MS3 The bracket from my SF intake snapped at the base. does the box get attached anywhere to the car itself?

Mine too. I think we should get the upgraded airbox for free

Any quantitative numbers we can look at? Perhaps side-by-side IAT vs ambient with stock SF vs the new SF+airbox ??

EDIT: nevermind I see it says ambient within 3* of IAT? Nice. I am lucky at straight cruise to see IATs within 10*F of ambient. Not sure what "18% heat soak delay" could mean... Cobb do you have the test conditions for this claim?

[shuynh]

I have my OCC mounted on my battery box so I dont think this will fit. Really nice looking though, to move the occ or not that is the question.

[XLT_66]

So, the latest round of testing conditions before release were as follows:

94* Ambient Temperatures

While the box would get down to 97-98 degrees, I would cruise until I saw the lowest that the SF intake would get and begin the test. In this case, I started both tests right at 99-100 degrees IAT.

1. Pull onto side of highway and begin timer/log once at a complete stop.

2. Sit at idle for 120 seconds.

3. Accelerate at the most consistent rate each time as possible to show cooling rates.

It's not the most "scientific" test in the world but I think it does a great job of showing what the box can do. We did tons of these tests that all yielded similar results.

Shown below is just a quick graph I put together showing back to back logs of the Gen2 box on and off the car on the same day, within about 20 minutes of each other. This isn't the best example and it's not the worst example of the airbox at work. This is simply a "typical" example.

You can see that there is a pretty healthy delay before temps begin to climb and heat soak starts to set in. You can also see that while, eventually, the box does get fairly high in the max temp range as the SF (everything heat soaks eventually), that upon accelerating, it cools quite a bit faster and doesn't go through the same temperature spike as the SF does when you first begin to accelerate. The box is able to take in fresh air quicker than the SF which must first inhale hot under hood temps before fresh air makes it way to the filter.

The blue line simply represents the temperature delta between the two tests. I think that the marketing team may have been confused by my "up to 18% temperature delta" sentence. It simply shows that the box cools quite a bit faster than the SF.

[fortressofcomfort]

Awesome, thanks for the qualifiers; that's what I was looking for. I believe a 1% increase in torque is realized for every 11*F decrease in intake temps. I'm not sure if we can apply that rule of thumb at the IAT (might apply moreso at the BATs for a turbo car), but looks like you are carrying about a 5-15*F decrease in IATs (just after you take off again), so its probably safe to say the box is worth 3-5 lbs/ft at the wheels under these conditions (could be more since the charging effect of the turbo on BATs is not linear but I don't know and don't feel like doing a proof; pv=nrt might prove it).

It's those 10-15 critical seconds after your two minute mark that are of most interest as those would represent a typical street race. Looks like "the box" actually provides gains for a good 20 seconds after a two minute "heat soak."

Of course entropy ensures all components under the hood would eventually reach the same temperature but its not totally clear with your data. I'd like to see this stretched to 3 mins and 5 mins to see if everything is fully soaked by then.

I'd also like to see this same test performed under low ambient heat conditions (say 40*F). Are the results similar? I would suspect so but it'd be nice to see.

The 18% claim is confusing because, as a scientific test, you are basing your denomiators around some constant. Like 32*F or something. There's heat in the air all the way down to absolute zero (0 kelvin) so to make a claim like that you'd either need to base it off of absolute zero (which would yield a quite lousy marketing statement) or state the constant, or range of discreet constants, you are using. I'm sure you know what I mean. I think a better marketing statement might be whp gains or % whp gains. 3-5lbs/ft at the wheels is nothing to sneeze at since its worth around 0.1 in the 1/4 mile roughy a car length at the traps :-)

One other question: does this require a new map (esp MAF Cal) ?? I can't imagine why it would but if the air is coming into the filter in a slightly different manner (due to a higher pressure area around the filter now) then its possible it could throw the MAF readings off ever so slightly. Did you notice any fueling issues with the box? Unsteady or unusual AFRs? LTFTs still good, etc?

Thanks @XLT_66

[fortressofcomfort]

Forgot to mention my interest in this goes back a bit:

http://www.mazdaspeedforums.org/foru...ml#post1446255

It seems Cobb is using that second piece of silicone hose to attach to the stock intake area (picture 0009.jpg), however, the stock intake uses two pickup points with another large one being to the left of the engine (if you are facing the engine looking at it). In other words the stock airbox got most of its air from the left side of the engine (perhaps only to allow room for that resonator but not sure) while this new Cobb airbox picks it up from a different spot (to the right of the engine).

http://www.mazdaspeedforums.org/foru...ml#post1446361 (look at pic 0019.jpg for clarity of two stock pickup points behind fasica)

Am I hallucinating again? Dammit!

[XLT_66]

We didn't notice any need for a MAP change. None of our testers have mentioned any change in fuel trims either.

[fortressofcomfort]

OK good, thanks.

[ahfunaki]

That looks so clean!

[BOTTLEFED08]

Originally Posted by XLT_66 We didn't notice any need for a MAP change. None of our testers have mentioned any change in fuel trims either.

This is true, no calibrations were needed after Cobb box was installed. Targets were being hit and the ltft looked great! I noticed same results with stg 0 and stg 2 OTS maps. In very hot temps, I did logs and let the car idle for roughly 5-8min and the IAT's rose to near high 140's. Then after cruising for a few moments to get over 45mph the temps dropped back down to just over ambient temps.

[outshined]

I think $300 is a little beyond reasonable for a plastic box and a few inches of silicone tube.

Just IMHO. Looks nice though.

[ibcrusn]

With the slight box differences will the Gen 1 box fit the Genpu? I don't see a need to add the extra hose when the box is pulling from the wheelwell.

Ditto the sentiment that the plastic box is a over priced. Priced more competetively within the realm of the CS unit and "they" will come and Cobb would recoup their investment quickly.

[Mchart]

Originally Posted by outshined I think $300 is a little beyond reasonable for a plastic box and a few inches of silicone tube. Just IMHO. Looks nice though.

I disagree. You are paying for R&D costs, among other things.

At the same time it's not like Cobb is overcharging IMO. Take a look at aftermarket companies for Mercedes or BMW. *cough*dinan*cough* You wanna talk about overcharging. There you go. Same quality as Cobb parts but typically at least twice as much in cost. The Dinan intake setup for a 135i is $1300.

And frankly, this looks to have much better fitment and overall quality then the CS setup. Not bashing Corksport. Their stuff is functional, but it is cheaper for a reason.

[outshined]

Originally Posted by Mchart I disagree. You are paying for R&D costs, among other things. At the same time it's not like Cobb is overcharging IMO. Take a look at aftermarket companies for Mercedes or BMW. *cough*dinan*cough* You wanna talk about overcharging. There you go. Same quality as Cobb parts but typically at least twice as much in cost. The Dinan intake setup for a 135i is $1300. And frankly, this looks to have much better fitment and overall quality then the CS setup. Not bashing Corksport. Their stuff is functional, but it is cheaper for a reason.

Look at it this way:

The difference between the Gen 1 and Gen 2 air box kit is a slightly different plastic molding and a ~6" long piece of silicone tubing (that's completely unnecessary I might add). The difference in price is $90. Would you pay $90 for a single boost tube, while most of the silicone boost tube kits are $45-$70?

Or another way:

The Gen 2 air box costs $300, which is half the price of a brand new AP. For $600 the AP gives you active R&D, unlimited tuning possibilities, unlimited power potential, and comprehensive logging abilities. For $300 the air box gives you very little if any net gain in power and a slightly prettier engine bay - definitely not anywhere near the utility and value of the AP. The Cobb SF intake which costs less is a much better value in that regard as well; it offers a tangible performance increase and is priced to offer a good price:performance ratio.

Cobb and Dinan et al charge what their market will bear. That's why the Dinan 135i intake costs $1300, and its also why the BMW AccessPort costs $900.

I'm not hating on Cobb. Our platform would be essentially obsolete without their tuning solution. I just think that there is little value in a $300 cosmetic mod for those of us driving mid- $20k cars that fit the target market (and income) segment for Speed3 buyers.

[Mchart]

Well if you don't want to use the stock Gen 2 cold air setup you could just save the money and buy the Gen 1 stuff for the Gen 2. Should fit without any issue.

Myself, i'd want to use that factory ram air setup.

Or just buy Gen 1 box and cut a whole in it and ghetto it out.

[outshined]

Originally Posted by Mchart Well if you don't want to use the stock Gen 2 cold air setup you could just save the money and buy the Gen 1 stuff for the Gen 2. Should fit without any issue. Myself, i'd want to use that factory ram air setup. Or just buy Gen 1 box and cut a whole in it and ghetto it out.

Not a bad idea, maybe someone will try that.

The Gen 2 "cold air" feed tube is not ram air, it takes ambient air from the header panel just above the radiator. Interestingly when the cooling fan turns on, it causes a negative pressure condition in that tube which would suck air back out of any air box, stock or otherwise.