greatwhitecaper

<center><img src="http://pictureposter.audiworld.com/43940/the_scheme.jpg"></center><p>Ok so i'm writing this post for the 3rd time now cause it keeps disappearing on me everytime i post it. Anyways, having some random thoughts about cold weather and OEM intake efficiency i decided to run a little something something a few nights back. What i did was take a 1 1/4 inch hose and a 5-6inch in diameter cookie box lid that was circular. I cut a hole in the lid and attached the hose seamlessly leading out of the lid. I routed the hose so that it would lead up through the metal cracks in the fender and into the airbox intake. What i figured was that the air will flow through the intercooler (since it's the second one along the chain, the temps should be lower) and ram into the lid, go through the hose and into the airbox. Sounds good in theory, so i went out and did some actual driving. Car felt great, pulled nicely in all gears and just overall responsive. One thing that changed drastically is that now above 5k rpm the K04 makes this noise, as if it's trying to rip itself apart. It's very hard to explain but if you've heard for yourself the difference between a stock S4 and a chipped one, then you know the difference in sound the turbos make. Now i'm not chipped, so my K04 is not nearly close to pumping out its full potential but it sounded very vicious through under-highway tunnels and such.
As for temperature, i drove around in about -9 to -11 Celcius a few nights ago and my airbox temp readings were 1 to -2 celcius respectively, now i'm thinking that's pretty good considering that i'm running on a OEM airbox and just a K&amp;N. But then again, i could be very wrong. Won't know if you don't try right ?

Would anyone have temp readings from their airboxes to compare? chipped TTs? BMC type intake ?

Sorry about the ghetto pic, after i set it all up, i was anxious so i put everything back together and went out for a long drive. Cheers

greatwhitecaper

Also, drove last night in 0-2 celcius, temps were 10-12 celcius in airbox.

ScepTTor

making it less efficent because less air is moving through the fins of the Intercooler. Its a bottle neck effect. Then again not sure it would make a difference in the temp your driving in.

JazziTT

feed. IMHO. : -)

greatwhitecaper

plus as some of you may have noticed, when you have 2ICs there isn't any room to run anything bigger than a 1 1/4 hose, which kinda blows but hey, by the time i've got an FMIC it'll all be like butta

Europa

The air coming off the IC will contain the heat coming off the IC (the very heat you've pulled out of the intake charge). Also, there's the the issue of the decreased airflow into the intake - the IC is a restriction in the intake chain, reducing flow. And, the IC is less effective because the reduced flow.

I think the effects will be more pronounced when the weather's warm, where I think you may see decreased performance because of the one-two punch of decreased IC efficiency and higher intake temps.

I like the principle, but I don't think it's effective. IMO, of course.

JazziTT

It's all Steve's fault and the Sean (the pusher) was more then I could take.. : -)

greatwhitecaper

hehe i've got my whole life to try 'creative' things but no doubt FMIC is high on "to-do" list

greatwhitecaper

agreed. i doubt this setup will be good for warm-temp weather either. it's just i couldn't resist

Europa

Yeah, it's always worth a shot. Where are you from, 'Caper?