sure thing buddy. you will say whatever you need, to sell your product. I understand, you are a sales man, which is why I would not take anything you say too seriously.
its already been shown that an intake sucking air from inside the engine bay, will actually lose power once the air in the bay is heats up. actually the stock air box and K&n panel filter, made about the same power as the CAI, accept top end. where the CAI dropped power.
talk about half assed, take a look at your heat shield. there's no way hot air can get to your filter!!!
[full hard pipe] if you have ever read a science book you would realise silicone's heat conductivity is around 0.2 W/mK. As a general fact most plastic is a better option when you actually trying to keep heat out! maybe someone at injen "engineers" should have read a book first before using metal for their intake tube.
Just kidding im sure they know this, they chose to ignore it because its cheaper for them to use a metal drain pipe. but thanks for giving all of us a cheap option.
http://fiestast.net/threads/fiesta-st-intake-2jr-dyno-results.997/
Caaaallllm down, man. There's no need to be rude here. He does have a point, and it's by no means as if we manufacture Injen's intake - we're enthusiasts over here ourselves - but more importantly unless you have a USDM or NA Fiesta ST you can't use an Injen intake anyways if you are in South Africa, as your intake options will differ from what we are using stateside as the ECM as well as the ECM's method of metering incoming air is totally different between the two. While we can both use the Mountune intake pieces and this Graham Goode piece probably, but any system where the upper airbox housing is changed or sensor is moved won't interchange.
Am I going to lose sleep if you don't buy your intake from the company I work for? No. Would it be nice if you did? Yes, but that's not the point. (It's worth noting I am non-sales and totally non-comissioned) Part of why I convinced the bosses over here to let us start offering parts for the ST market is to ensure that we, collectively, as enthusiasts, have options - it's selfish too, because I want the best stuff available for my car and my friends with Fiestas to be at a one-stop-shop as it were. I personally research every Fiesta ST and Focus ST item we offer myself, I - and the Modification Experts (not salesmen) I work with know what those options are, what's realistically possible to do with modifying a car and the technical reasons for why you might want to get a particular mod or why one option might be a better fit for you than the other.
As a Fiesta ST expert, and someone who's run both Injen Intake and modified Stock Intake with Cobb Filter and about to try out Cobb's offerings on my own car, here's something to consider. The Graham Goode intake setup is just a piece of the induction system, not any different than Mountune's piece for the same part of the system. It's only 1/3 of the system. It cannot deliver anywhere near the same gains as Injen, Cobb, FSWerks simply because there is less of the intake system replaced.
Injen, Cobb and FSwerks are all using hardpipes, and personally I prefer the hardpipes over silicon - the flow is fantastic and there is definitely gain there - surely the engineers at three separate manufacturers can't be wrong. The change in throttle response is also quite dramatic - I don't at all doubt the dyno figures quoted. And dude, this is the internet, it's reasonable to expect you'll be asked to provide proof of what you're saying sometimes.
What I don't like about this system - and Mountune for that matter - is having to piecemeal the intake system together, and at $200+ per piece, that adds up quite quickly.
Yes, a sealed airbox will draw lower temperatures than an open filter element with a heat shield overall - what I have a hard time fathoming is why you are opting for GG and not Mountune when even Mountune is actually less expensive...
Since I personally ran the Injen intake in conjunction with my Cobb AccessPORT, I watched my intake air temps and in the real world, there was not much difference between OEM and Injen as far as charge temps go. Having switched between Injen intake and OEM airbox with Cobb high flow (unmodified airbox), hands down, Injen wins for power across the revband - and remember, these cars only rev to 6500-6750 unless you're tuned, so that low end response really helps you scoot. I experienced a record-setting hot day with the Injen unit a few months back and again a week or so ago with the Cobb high flow in a modded stock airbox. On a hot day, your Fiesta ST is going to bog unless you do something to further bolster cooling regardless of what intake you have. If I'm honest, I might try modifying the Injen intake slightly and relocating the filter further for the coolest possible air charge in the future, as I've done with my lower airbox. Having modified my OEM airbox (modded open bottom ducted to inside fender, ported ducting bringing in cool air from behind headlight), it's still not as powerful as the Injen intake, isn't as loud/satisfying to drive with and the charge temperatures aren't much different than with Injen.
If you are seriously worried about maximum cooling, heat reflective tape is an easy and inexpensive solution, but for the majority of users, outside of extremely hot climates, probably won't notice much difference between Silicon and aluminum hardpipes. The other thing is, as a long time Ford owner, historically we have not had good luck with parts made of plastic... (4.6L Intake manifold anyone? 3.8L Intake with IMRCs?)
While Joe did a great job in the thread you posted, the testing wasn't exactly done using the scientific method, and only compared a stock airbox with K&N drop-in and in his test, no heat shielding at all was present around the filter when it was in the bay... so it's not exactly apples-to-apples comparison and the extra variables make it messy. It would be nice to see a direct head-to-head CAI vs CAI. And the Injen unit closes up the bottom, whereas the 2J test run plumbed the filter element directly down where the lower airbox normally lives. Again, not apples to apples.
I can appreciate that you are trying to have a discussion but I don't appreciate your tone - one of the things that makes FiestaSTForum different is the manners and civility of the userbase, so please try to remember to be polite.
So that's my perspective on this.