COBB SRI Filter Maintainance?

SHAGwagn

Member
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'07 Mazdaspeed 3 GT
Are we supposed to clean this thing? I know they are non oiled...so what are we supposed to do? Just change it out? What are the signs?
 
they require oil indeed. cobb sells a clean 'n recharge kit. i don't exactly know how often it should be cleaned, but when the blue fades it's definitely time for a cleaning. i'd think every 10-15k should be ok, but if you live in a dusty area it might needed it sooner. i have 2, because the filter has to dry after cleaning, so i can drive right away.
 
I don't know about the COBB sri but if it's a dryflow then I don't see a problem using these methods.

There are three cleaning method: Tap cleaning, Vacuum and Washing Method. You'll will have to remove the filter first for any method you choose.

Tap cleaning: Hold the filter at a solid end and tapping on the other will release dirt trapped in the pleats. Keep rotating and repeat tapping.

Vacuum: Vacuum up and down each pleat. Rotate filter untill a few rotations have been made.

Washing: Place under running water from the inside out washing the debris out or the filter. A dish or liquid laundry detergants may be needed for removing excessive dirt. Air dry filter for a few hours until it is dry. Then install.

These info came with my CPE sri. I do all of above in that order.
 
the cobb sri is not a dryflow filter and you shouldnt use compressed air.

go to any local autoparts store and pick up a k&n recharge kit, same as cobbs, not as expensive, but will turn the filter purple instead of blue.

1. brush/shake off any loose debris that you can
2. spray cleaning solution on outside of filter
3. wait 10 min or so
4. using a hose, pour water from the inside of the filter out. using the water to push debris off the filter, dont go the other way as you will drive dirt deeper into the filter
5. let stand dry, dont use a hair dryer or the like (i put mine in the boiler room of my house)
6. spray oil onto ouside of filter until it turns purple/blue (depending on if u buy cobb or k&n)
7. let sit to allow oil to spread thru filter material

Important note:

DO NOT OVEROIL you will kill your MAF sensor
 
Awesome! Thanks alot...so a k&n will do the same job...perfect cuz the shipping from Cobb is more than the damn recharge kit!
 
Yes, the K&N is the same thing. Just make sure you have PLENTY of time to do this as it does take a while to dry the filter. Best if you have a few hours to kill for the total project time.
 
Oiled gauze filters typically don't need to be cleaned except every 50,000 to 100,000 miles, depending on application unless you drive on dirt roads a lot. Just because they look dirty does not mean it is time to clean them. People clean way too frequently and typically over-oil the thing.

From K&N's web site FAQ's:

4. How often do I need to clean my K&N air filter?

If you have not experienced a decrease in mileage or engine performance, chances are your filter is fine and does not yet need cleaning. To be more specific, the filter does not require cleaning if you can still see the wire screen on the entire air filter regardless of how dirty it may appear. When the screen is no longer visible some place on the filter, it is time to clean it. When used in normal paved road, street or highway conditions, our replacement air filters that fit in the factory air box should require cleaning every 50,000 miles and our large conical filters on an intake system should require cleaning every 100,000 miles. When used in dusty or off-road environments, our filters will require cleaning more often. We recommend that you visually inspect your filter once every 25,000 miles to determine if the screen is still visible.

For more info go here:

http://www.knfilters.com/faq.htm#16
 
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@ MSMS3

While this is true for k&n filters, it may not hold tru for cobb's filter. I find i need to reoil mine every 6 months or so.

the attached pic was after roughly 3k miles of driving. Its not that the filter is clogged and needs cleaning, its that the oil dries out, therefore reducing the filtering capacity.

when it looks like this, time to reoil.
 

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Oh, I see. I guess K&N does not make that filter.

The CAI on my MS3 has the dry flow type, so my cleaning is different. But I do have three other vehicles with K&N cotton gauze filters and you just can't wear those things out and they hold their oil very well. Maybe you ought to consider getting the measurements on your filter and get a K&N replacement if you're having to clean it that often. They have generic filters available by size measurement for just about anything you can imagine. Just a thought.
 
Oh, I see. I guess K&N does not make that filter.

The CAI on my MS3 has the dry flow type, so my cleaning is different. But I do have three other vehicles with K&N cotton gauze filters and you just can't wear those things out and they hold their oil very well. Maybe you ought to consider getting the measurements on your filter and get a K&N replacement if you're having to clean it that often. They have generic filters available by size measurement for just about anything you can imagine. Just a thought.

i considered switching to a dryflow, amsoil makes a good one thats actually a bit bigger than cobbs, so it can handle air more efficiently, but after my tune it will throw my trims off, as stupid as that sounds. i actually tested it and saw up to 5% changes in trims at different rpm levels. so when i get a big power mod and require a retune, ill make the switch.
 
...or you can get the AEM dryflow filter, which is nearly the exact same size as the Cobb filter.

I switched over to one a few weeks ago, and while I've yet to log my fuel trims, the car's character hasn't changed one bit. Perhaps I'll run a couple of logs to see if my MAF needs recalibrating, but I don't think it does...
 

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