Hey SuperTek Industries, I'll be ordering soon!

This is actually a big reason I've been considering the Perrin, even though I much prefer the looks of this unit...

David

Your post prompted me to dig out some old logs from Torque OBD. I plotted how long it took to for IAT to return to ambient temperature after the car had been parked up between track sessions.

Bear in mind this is completely non-scientific - logging was carried out on two different days on two different tracks, and both were done during warm-up laps (i.e. not full speed)

Log 1 was stock air intake; ambient temp was approx 29C on the day. Track was Sydney Motorsport Park GP Circuit.
Attachment 71371

Log 2 was with the Supertek intake pipe; ambient temp approx 26C on the day. Track was Wakefield Park
Attachment 71372

Given the wildly non-scientific nature of my logs, I won't comment on the results. Feel free however to draw your own conclusions.

Mine was in stop and go traffic, hence both climbing above 140F so +60 degrees being stuck in the traffic jam hence the heat soak. Whereas yours was just 45 degrees. Once out if the jam, the stock intake dropped further and quicker.
I can see why it wouldn't be an issue if you are on the track for a few minutes with open air since I am only doing the speed limit at 60kmph max. It is probably cooling the intake tube in your case.

s2d4, do you have any logs you can post?

I'm interested in this piece, but if heat soak is really bad and we've got logs to prove it then I may have to reconsider. The unscientific logs posted above seem consistent with my experience with a metal intake pipe, which is to say that it gets hotter but also drops the heat quicker.
Granted, I live in the Pacific Northwest, so it doesn't exactly get swelteringly hot here (especially compared to Aussieland) but that engine bay on the BRZ is a fucking oven.

Also huge shouts to the guys at Supertek for being stand-up dudes with great customer service. Emailed them last night about a pricing snafu on their site and they had it fixed and responded to me in less than 12 hours, which is the kind of stuff that makes me definitely want to give them my business.

Absolutely agree that stop-start traffic would likely tell a different story altogether! Fortunately for myself, my car hardly ever gets driven under those conditions so I'm quite happy to leave my setup as is.

I have fully functional fender vent which definitely work while it is stationary, not 100% sure that it works whilst in motion but it appears to work for me.

This is the log that prompt me to not run the intake anymore.
http://datazap.me/u/s2d4/ofh-superte...og=0&data=1-12

Stock intake.
http://datazap.me/u/s2d4/ofh-stock-i...og=0&data=1-12

Unless those graphs are mislabeled or I'm drastically misreading them, the Supertek seems significantly LESS susceptible to heat soak - there's no steady climb in IATs in the supertek log like there is in the stock log.

Not sure what you are on about but I think you are talking about where it starts.
They both climb, one log is 3 times longer than the other and doesn't start at the peak temp of the IAT.

Gotcha. I'm referring to these big spikes in temperature in the stock intake graph is all. I don't see any of those in the Supertek graph.

http://i.imgur.com/nH1z4UA.jpg

That's heat soak, right?

that is because that log starts at the peak so matches to only the last 3rd of the stock intake log.
as for heat soak, I see the consequence as passing heat onto air, evident as one could not drop as low as the other.

what you are focusing on its just temperature rising when the car is stuck in traffic.

Not sure how else I am suppose to explain that graph when everything has been stated already.

I was under the impression that at speed, heat dissapation from engine components to the air traveling into the throttle body was negligible because of the velocity the air was traveling at. What we should be looking at is air velocity changes at the start and end of the intake right? Im a firm believer that the stock intake is a quality piece. I just don't think a sound tube or a baffle helps performance. Thats why this intake fits my needs. It keeps most of the stock intake in place while getting rid if bits I find useless. Now if only supertek could come out with a velocity stack tube that replaces the stock one but with no baffles :D

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How does a heatsink work?

You mean the intake resonators? Baffles are entirely different things.

There is a velocity stack on your intake duct.

Hehe just trying to start up some intellectual conversation on the topic. I know there are a ton of threads with tons of pages on intake temps and velocities and stuff. Im still debating whether to buy the perrin tube or this one. Thanks for the review though. The charts You posted were very helpful.

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