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Old 02-28-2021, 02:17 AM   #1
Chi_San
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Default Intake icing over

I just went on a bit of a road trip to Wyoming. While driving through Nevada, I started losing power, and having some really hard hitching, especially when going down hills.

Finally, I pulled in at a gas station, popped my hood, and my entire cone filter was iced up.

I don't have a skid plate/under engine splash guard.

Will installing a skid plate, and getting a filter sock remedy this in the future, or do I need to get a new filter? Stock airbox is a no-go, since the one that came with the truck is completely trashed, and the Snorkus is missing. Only way I could make the airbox work is by either buying a totally new one (not going to happen), or to glue the existing one shut, which... Well, I have a K&N panel filter for it, but I'm not sure that's a great idea.
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Old 03-01-2021, 09:33 AM   #2
GeoNV
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The sock might help. An under tray might help a bit. If you are getting splash directly onto it than that will help a lot. Was it freezing fog or snow on the roads?
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Old 03-01-2021, 10:18 AM   #3
GalaxyWide
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Can you not get a used airbox? They're usually VERY cheap, and would 100% solve your issue while actually functioning better than an aftermarket "CAI". The snorkus is largely optional, and generally just cuts down on induction noise.
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Old 03-01-2021, 11:24 AM   #4
K3rm1tth3fr0g
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+1 for stock airbox. If you are making under 300/350WHP, the stock airbox is more than fine, and keeps intake temps nice and low with very little heat soak.

I just sold mine otherwise id offer it.
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Old 03-01-2021, 12:31 PM   #5
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Quote:
Originally Posted by GeoNV View Post
The sock might help. An under tray might help a bit. If you are getting splash directly onto it than that will help a lot. Was it freezing fog or snow on the roads?
It was around 28 with around 3-5" of slushy snow on the road. It was basically getting hosed right up on the air filter. I had around 2-3" of ice stuck to the sides, front, rear, and in the bed, after driving in it for around an hour.

Quote:
Originally Posted by GalaxyWide View Post
Can you not get a used airbox? They're usually VERY cheap, and would 100% solve your issue while actually functioning better than an aftermarket "CAI". The snorkus is largely optional, and generally just cuts down on induction noise.
Well, sadly no. The local population of Subaru owners has shifted away from the older EJ style to the newer gen stuff, and stuff like airboxes and various other parts are simply never available. I'd have to buy a brand new one, and that's really... not something I'd even consider.

Quote:
Originally Posted by K3rm1tth3fr0g View Post
+1 for stock airbox. If you are making under 300/350WHP, the stock airbox is more than fine, and keeps intake temps nice and low with very little heat soak.

I just sold mine otherwise id offer it.
The plan is to eventually get up over the 300 WHP mark. I know the stock 5 speed won't handle it, but... I don't care? It's old. I'll eventually do a 2.6 stroker build and put a 6MT in it, and have a rocket ship again.

As an update, I do have a sock in the mail, and a Rallitek skid plate as well. I wish I lived closer to them, I'd rather have saved the shipping costs and just picked it up myself, but it was cheaper to ship than the gas to drive up and back with it. >_>
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Old 03-01-2021, 01:18 PM   #6
GalaxyWide
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Per this post, the stock airbox is good to around 400hp, so it's fine for just about any stock location turbo.

I did a quick search on car-part.com and found pages upon pages of cheap used turbo subaru airboxes. EBay also has plenty, and any local subaru enthusiast group should be able to find one as well. That part (#46051AE000 for the lower, upper is the same X-ref) is listed as fitting just about every turbo subaru from 2001 to 2008, so you have lots of options!

So before you go dumping time and money on an inferior solution, just pick up a cheap used airbox and enjoy your cold, clean, non-icy air intake.
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Old 03-01-2021, 01:39 PM   #7
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Why would you have to buy a new one? I see them all the time for sale both locally and used on the various forums. Here is one (two, actually) for sale since yesterday in oregon for $30-50. https://www.facebook.com/marketplace...2496536796062/ See one on ebay for the same plus shipping.
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Old 03-01-2021, 10:54 PM   #8
Chi_San
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Quote:
Originally Posted by GalaxyWide View Post
Per this post, the stock airbox is good to around 400hp, so it's fine for just about any stock location turbo.

I did a quick search on car-part.com and found pages upon pages of cheap used turbo subaru airboxes. EBay also has plenty, and any local subaru enthusiast group should be able to find one as well. That part (#46051AE000 for the lower, upper is the same X-ref) is listed as fitting just about every turbo subaru from 2001 to 2008, so you have lots of options!

So before you go dumping time and money on an inferior solution, just pick up a cheap used airbox and enjoy your cold, clean, non-icy air intake.
Look, buying an airbox requires me to spend more money than I already have; The filter sock was all of $20, and the skid plate is necessary, since the factory plastic under-trey was trashed, and it should be replaced (or upgraded) regardless.

I have had this intake system since 2006, and have put well over 250,000 miles on it, and it has never given me any issue.

Quote:
Originally Posted by cdska View Post
Why would you have to buy a new one? I see them all the time for sale both locally and used on the various forums. Here is one (two, actually) for sale since yesterday in oregon for $30-50. https://www.facebook.com/marketplace...2496536796062/ See one on ebay for the same plus shipping.
Your 'Locally' and my 'locally' are VASTLY different in available parts. Boston has, what, several million local residents? There's less than 150,000 here. Boston isn't exactly a Ghetto, either, whereas the area I live in basically is one huge Ghetto, with a few nice bits sprinkled around it. The local CL market is literally just spam, some tire shop that is 700 miles away fills CL with junk wheels and tires that literally nobody cares about, and another place that's 650 miles away the opposite direction spams with import engine ads. That's literally it.

I've already got parts in the mail, they'll be here tomorrow, and quite honestly, the conditions I was driving in were pretty extreme. I seriously don't want to waste my money on an airbox to replace something that has served me well for such a long time.
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Old 03-01-2021, 11:00 PM   #9
K3rm1tth3fr0g
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Quote:
Originally Posted by Chi_San View Post
Look, buying an airbox requires me to spend more money than I already have; The filter sock was all of $20, and the skid plate is necessary, since the factory plastic under-trey was trashed, and it should be replaced (or upgraded) regardless.

I have had this intake system since 2006, and have put well over 250,000 miles on it, and it has never given me any issue.



Your 'Locally' and my 'locally' are VASTLY different in available parts. Boston has, what, several million local residents? There's less than 150,000 here. Boston isn't exactly a Ghetto, either, whereas the area I live in basically is one huge Ghetto, with a few nice bits sprinkled around it. The local CL market is literally just spam, some tire shop that is 700 miles away fills CL with junk wheels and tires that literally nobody cares about, and another place that's 650 miles away the opposite direction spams with import engine ads. That's literally it.

I've already got parts in the mail, they'll be here tomorrow, and quite honestly, the conditions I was driving in were pretty extreme. I seriously don't want to waste my money on an airbox to replace something that has served me well for such a long time.



Lots of stock intakes are available on ebay for CHEAP FWIW
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Old 03-02-2021, 12:48 AM   #10
GalaxyWide
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Well this thread has been useful, good thing OP asked for advice!
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Old 03-02-2021, 01:25 AM   #11
Chi_San
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Yeah, thinking about going elsewhere again. Not that there really is an elsewhere. Maybe just sell it, and get a Ford or something. >_>

I also doubt that a stock airbox would have 'fixed' this, since I had roughly 200 lbs of ice basically blasted all over the exterior of the truck when I had totally iced up the intake. There was so much stuff flying around, it was literally everywhere. It was stuck to the bottom of the hood, the firewall, whatever.

Tomorrow I will hopefully install the skid plate, and just not deal with this again.
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Old 03-02-2021, 03:42 AM   #12
murrdogg24
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+1 get a ford
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Old 03-02-2021, 08:34 AM   #13
GalaxyWide
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Agree, get a ford and give the subie to someone who appreciates it.


How would ice have gotten INSIDE a sealed plastic box that only opens into the inner fender well? Unless of course, you also don't believe in fender liners....
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Old 03-02-2021, 08:57 AM   #14
K3rm1tth3fr0g
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How do you figure ice would have gotten inside of the airbox?
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Old 03-02-2021, 10:16 PM   #15
Chi_San
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Quote:
Originally Posted by GalaxyWide View Post
Agree, get a ford and give the subie to someone who appreciates it.


How would ice have gotten INSIDE a sealed plastic box that only opens into the inner fender well? Unless of course, you also don't believe in fender liners....
I was going 60+MPH, through 2-3" of slush, which was getting hosed EVERYWHERE. The slush was literally splashing off the front right tire, hitting the side of the engine, and blasting straight up against the bottom of the hood, and splashing in all directions. It would get into the fender wells, and without a snorkus, it would have gotten in the airbox. There was ice hanging off the bottom of the hood damper, there was ice clogging the HVAC intake, there was literally ice EVERYWHERE. It was even building up in the fenders, it took 4 days for it all to melt and drain out, and left a huge icy puddle on the garage floor where I was staying.

This also is 100% NOT HELPFUL because it's a bit impossible to pull over in a really remote place, with a truck full of crap, with NO CELL RECEPTION, order a part, and install it right then and there.

My actual question was if a filter sock and a skid plate would have helped. I have no intention of ordering an air box. If I did, I would have had one before I left on my trip. I did order a skid plate and a filter sock.

I'm done with this thread.
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Old 03-02-2021, 11:40 PM   #16
Subie_
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Quote:
Originally Posted by Chi_San View Post
Will installing a skid plate
probably, less slush up in there, the better

Quote:
Originally Posted by Chi_San View Post
getting a filter sock
probably not, it'll just get caked up

Quote:
Originally Posted by Chi_San View Post
get a new filter?
probably not, thaw & let it dry

Quote:
Originally Posted by Chi_San View Post
or to glue the existing one shut, which... Well, I have a K&N panel filter for it, but I'm not sure that's a great idea.
been there, done that, use self taping screws.
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Old 03-03-2021, 01:40 AM   #17
cdska
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Quote:
Originally Posted by Chi_San View Post
Look, buying an airbox requires me to spend more money than I already have; The filter sock was all of $20, and the skid plate is necessary, since the factory plastic under-trey was trashed, and it should be replaced (or upgraded) regardless.

I have had this intake system since 2006, and have put well over 250,000 miles on it, and it has never given me any issue.



Your 'Locally' and my 'locally' are VASTLY different in available parts. Boston has, what, several million local residents? There's less than 150,000 here. Boston isn't exactly a Ghetto, either, whereas the area I live in basically is one huge Ghetto, with a few nice bits sprinkled around it. The local CL market is literally just spam, some tire shop that is 700 miles away fills CL with junk wheels and tires that literally nobody cares about, and another place that's 650 miles away the opposite direction spams with import engine ads. That's literally it.

I've already got parts in the mail, they'll be here tomorrow, and quite honestly, the conditions I was driving in were pretty extreme. I seriously don't want to waste my money on an airbox to replace something that has served me well for such a long time.
I linked you to a marketplace ad in your state doofus
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