I removed the air-intake snorkel, so far so good..

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mareakin

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Just wanted to report that and to see if anyone else out there has done so.

The car is a 2007 Corolla CE/Automatic-Transmission.

Here is what the air collector box and snorkel looks like:
CIMG6931.jpg


I hoped for a better throttle response and that's exactly what I got. It's slight but noticeable. I'm really not imagining it. I don't think so, at least.

I'm encouraged by this result. I think I might take it a step further: Removing the OEM paper filter and dropping in a K&N high-flow filter or I might try a short-ram-intake, aftermarket.

Anyone else done this?
 
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Where is the air being drawn from now? The stock intake is a cold air system that draws air fron outside the engine compartment. Sticking a cone filter on that would be exposed under the hood, drawing in hot under-hood air (hot air intake) would be a performance downgrade.
 
It is a really bad idea to drive around like that as your engine is now sucking unfiltered air. You would be surprised at the dust and grit that gets blown up into an engine compartment that now has a free and open shot at your throttle body.

K&N drop in filters give slightly better air flow vs standard paper filters but nothing significant. Their benefit is a longer service life out of the filter vs replacing expensive paper filters every 10K +/-. No real performance gains from them to speak of.

You can add a CAI if you wish and you might see a small performance gain but they really don't give much even in V8 applications let alone a little 4 banger in a Corolla. You might notice it at first but you will get used to it real fast.

Whatever you decided put your stock air box and intake tube back on until you decide. Don't drive around with the throttle body exposed just sucking unfiltered air. All kinds of grit and stuff is going to get sucked in. Especially during winetr if you are in the North( sand and salt on the roads ).
 
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here's a pic of the snorkel:
CIMG6926.jpg


a pic of the air collector box:
CIMG6917.jpg




===================================================
Those pics are just for reference (they're not even mine,) I have NOT removed the air collector box or the air-filter. I'm not so crazy
smile.gif
I respect my engine, and would not feed her dirt. :-)


The way the snorkel is positioned, I don't think it's sucking in air from "outside" the engine bay.
 
Originally Posted By: NHHEMI
It is a really bad idea to drive around like that as your engine is now sucking unfiltered air. You would be surprised at the dust and grit that gets blown up into an engine compartment that now has a free and open shot at your throttle body.

K&N drop in filters give slightly better air flow vs standard paper filters but nothing significant. Their benefit is a longer service life out of the filter vs replacing expensive paper filters every 10K +/-. No real performance gains from them to speak of.

You can add a CAI if you wish and you might see a small performance gain but they really don't give much even in V8 applications let alone a little 4 banger in a Corolla. You might notice it at first but you will get used to it real fast.

Whatever you decided put your stock air box and intake tube back on until you decide. Don't drive around with the throttle body exposed just sucking unfiltered air. All kinds of grit and stuff is going to get sucked in. Especially during winetr if you are in the North( sand and salt on the roads ).


Be advised, I think he just removed the snorkel, but is still using the filter.
 
ok, so i gotta ask. Why are you doing this? We are talking about a 2007 Corolla, right?? Is a few tenths of a second (0-60 time) really worth the expense and effort? Be advised you're gonna take a hit on your resale value.
 
You know what I got when I removed the snorkel and the sealed tuba piece?

More noise.

I eventually put a CAI on. Even more noise. Good noise to my ears but it is louder. No noticeable difference in mpg or performance
HPIM0899.jpg


I do like the DryFlow filter. I just wash it off and let it dry while I change the oil then stick it back on. Clean air filter everytime for just the cost of a little water.
 
Originally Posted By: Ryan
Be advised, he can always put the snorkel back on.


crackmeup2.gif


I did the same thing to my 1994 Corolla and it absolutely made the throttle response better. I think it also freed up a mpg or 2. It still gets plenty of fresh cold air from behind the headlight.
 
I know it's a different vehicle altogether but I also removed the snorkle tube off my air cleaner box. I took it a step further and took a Dremel tool to the front of the box and enlarged the opening to draw in more air. The elbow-shaped snorkel tube was pretty restrictive to air flow. A lot of guys with Second Generation Dakota's have done the same thing. I just use a plain dry paper element air filter and usually need to change it about every 15K because it gets dirty faster than the stock air cleaner setup. I get a little more power out of it this way. It will howl a bit louder as when passing another car or going up hill and giving more throttle.
 
I simply cut away a bit of the splash shielding on the snorkel behind the grill on my Jeep. There's still enough there that unless you blast it at the exact right angle with a hose, no water will reach the airbox, but between that and double-stacking the gaskets between the throttle body and air hat, I got a bit better throttle response and slightly more high RPM power, and she definitely howls a bit louder at WOT.
 
Originally Posted By: Ryan
Originally Posted By: NHHEMI
It is a really bad idea to drive around like that as your engine is now sucking unfiltered air. You would be surprised at the dust and grit that gets blown up into an engine compartment that now has a free and open shot at your throttle body.

K&N drop in filters give slightly better air flow vs standard paper filters but nothing significant. Their benefit is a longer service life out of the filter vs replacing expensive paper filters every 10K +/-. No real performance gains from them to speak of.

You can add a CAI if you wish and you might see a small performance gain but they really don't give much even in V8 applications let alone a little 4 banger in a Corolla. You might notice it at first but you will get used to it real fast.

Whatever you decided put your stock air box and intake tube back on until you decide. Don't drive around with the throttle body exposed just sucking unfiltered air. All kinds of grit and stuff is going to get sucked in. Especially during winetr if you are in the North( sand and salt on the roads ).


Be advised, I think he just removed the snorkel, but is still using the filter.


The picture in his original post shows everything removed which is why I responded as I did.
 
Originally Posted By: NHHEMI
Originally Posted By: Ryan
Originally Posted By: NHHEMI
It is a really bad idea to drive around like that as your engine is now sucking unfiltered air. You would be surprised at the dust and grit that gets blown up into an engine compartment that now has a free and open shot at your throttle body.

K&N drop in filters give slightly better air flow vs standard paper filters but nothing significant. Their benefit is a longer service life out of the filter vs replacing expensive paper filters every 10K +/-. No real performance gains from them to speak of.

You can add a CAI if you wish and you might see a small performance gain but they really don't give much even in V8 applications let alone a little 4 banger in a Corolla. You might notice it at first but you will get used to it real fast.

Whatever you decided put your stock air box and intake tube back on until you decide. Don't drive around with the throttle body exposed just sucking unfiltered air. All kinds of grit and stuff is going to get sucked in. Especially during winetr if you are in the North( sand and salt on the roads ).


Be advised, I think he just removed the snorkel, but is still using the filter.


The picture in his original post shows everything removed which is why I responded as I did.


Oh ok... gotcha.
 
If the snorkel was vented to outside ambient air, it is best to leave it on, or at least a bigger one that is routed that way.
But in very cold weather, you may want underhood air - that's what I do.

Many intakes are restrictive - some greatly so. The tiny snorkel inlet can be a very real restriction.

Get the K+N? No.
A good paper one every yer or maybe 2 is best.
 
Originally Posted By: Spazdog
I do like the DryFlow filter. I just wash it off and let it dry while I change the oil then stick it back on. Clean air filter everytime for just the cost of a little water.


...and NO oiled MAF sensor going haywire and killing your performance & mileage to boot!!
thumbsup2.gif
cool.gif
 
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