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02-24-2007, 06:23 PM | #1 |
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06 WRX Air Pump Removal - is it safe??
Ok, been searching this site and a lot of other forums but haven't really found an answer.
While wiring up my gauges today, I removed the Air Pump that is on the drivers side of the engine compartment where the Washer fluid was on the pre-06 models. STI's do not even have this air pump. I know it is used in the first 20-30 seconds of a start to feed air into the exhaust system so that the car will run cleaner and heat of the cat faster; but is it realy necessary?? After removing it, I plugged up the air hose that it fed and the car seems to be running just fine - no CEL or anything. I was wondering if anyone had any experience with this on 06+ WRX's... Thanks in advance. -Jeff |
02-24-2007, 06:26 PM | #2 |
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at least a few people have done this and it has been done safely so far,
I'm pretty sure you will get cels from removing this but i forget the evidence thread of this., so i'd suggest a way to delete the cel's for inspection I guess ask yourself if its worth messing around with the engine to remove something that perhaps saves some lb's but has no performance gain either way... if your going to do it i believe buschur or.. meld was it? some people were getting some block off plates together. |
02-24-2007, 06:33 PM | #3 |
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Keep us updated on whether or not you get a CEL. That stupid thing is so in the way when you're trying to install anything that goes through the firewall. If that wasn't there you'd be able to snake your arm down without taking off the IC. BTW, the 07 STis have that confounded contraption.
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02-24-2007, 06:39 PM | #4 |
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I'll let you know if I throw a CEL. So far I have only driving it like 10 miles with a couple of stops.
-Jeff |
02-25-2007, 02:13 PM | #5 |
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02-25-2007, 02:41 PM | #6 |
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02-25-2007, 06:00 PM | #7 |
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02-24-2007, 10:04 PM | #8 | |
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02-24-2007, 10:08 PM | #9 |
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here's a pic of my car used for a prosport boost gauge install... you can definitely see it on the right there...
[IMG]http://img.photobucket.com/albums/v250/jivemastert/boost***37;20gauge/underhood.jpg[/IMG] |
02-24-2007, 10:47 PM | #10 |
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So long as there are not tuning, CEL issues, I don't see why it wouldn't be safe. I am runnung an 06 longblock with no air pump in my FXT.
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02-24-2007, 10:54 PM | #11 |
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We need blocking plates ASAP.
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02-25-2007, 09:36 AM | #12 |
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02-25-2007, 02:33 AM | #13 |
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hmm would be a perfect place to fit my ANL fuse holder
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02-25-2007, 08:22 AM | #14 |
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My temporary fix for plugging the hole was to use one of those little rubber chair leg feet you can get at Home Depot for like $1.00. The one I have is 1" (or 1 1/4" in inner diameter, I forget). It just slipped over th hose (fairly tightly) and then I electric taped it in place to hold it and seal any air leaks. Seems to be working so far until I can find a nice rubber stopper for it.
-Jeff |
02-25-2007, 07:24 PM | #15 |
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David buschur took his off. The air pump will run for ~90 seconds max or until the coolant temp hits 150. Basically, it adds oxygen to allow fuel unburned in the cyclinders to ignite later and heat up the cats faster. Older STI's did not have these as they were the fleet exempt vehicle. WRX's didn't have these but instead had a pre-turbo cat. The airpump replaces the up pipe cat and, for the sti's, I guess they had to meet tighter emissions.
There is no performance benefit besides losing the weight of both valves and the pump. Dave said he wouldn't make plates unless he got at least 15 people. I made up a "guaging interest" thread for him and we got 9 people, but then the thread was deleted for whatever reason. |
09-27-2012, 01:47 PM | #16 |
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Tangent question... how does injecting air into the exhaust stream ignite the unburnt fuel? Isn't the air from the air pump cooler than just burned cylinder air? (there's no ignition)
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02-25-2007, 07:37 PM | #17 |
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i wonder if it was deleted for reasons of group buy/vendor thing...
or maybe something do to with tampering of emissions equipment |
02-25-2007, 07:44 PM | #18 |
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I remember the thread. It didn't list any pricing... it just asked for people who might be interested in such a thing. Then again lots of things happen around here without any rhyme or reason.
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02-25-2007, 07:48 PM | #19 | |
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I hate when threads I subscribed to disappear. |
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02-25-2007, 07:52 PM | #20 |
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My thought is that the cats wont last as long doing this mod? The cats being more plugged up from this mod with lots of miles on the engine down the road could make the car slower maybe?
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02-25-2007, 07:54 PM | #21 |
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I would want to know the fuel mapping and other factors between the cars with and without the air pump before I removed it.
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02-25-2007, 07:54 PM | #22 |
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Possibly. It's not really a group buy... it's more of a "I don't think people are interested in this thing so I'm not gonna have them mass produced until there is demand" type thing. So you're more than welcome to ask Dave what it would take to have them made and he can start an appropriate thread.
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02-25-2007, 08:04 PM | #23 | |
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02-25-2007, 07:57 PM | #24 |
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I've been wondering if anyone would come up with a creative way to use the pump. Obviously there isn't much of a performance benefit to removing 2 or 3 lbs.
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02-25-2007, 08:00 PM | #25 |
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What about if you hooked up a turkey call to it and ran a switch to the power inside your cabin. That way you can turn it on and you have instant turkey call sound.
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