From what I can tell, it looks like the K&N part number for the filter that comes with the Stillen intake is RC-2960.

http://www.knfilters.com/search/prod...x?Prod=RC-2960

The shortest Amsoil cone filter is 6.5 in. so if I have the K&N part number right I don't think it will fit in the Stillen airbox. I guess I will just have to measure the Stillen filter when I get home to be sure.

 

The 3050 filter is is 5 inches tall.

 

There is some space inbetween the end of the stillen and the airbox. So there might be space to fit it. The width would also be a concern.

 

But the flange inside diameter is only 3 inches on the 3050. That for sure won't fit the Stillen Venturi ring (MAF housing adapter).

I have maybe 1/4"-1/2" clearance between the filter and front of the airbox on mine.

If anyone has measurements for the Stillen airfilter (or Popcharger airfilter) please chime in. I am just going by memory at this point.

 

That's true, I do like the dry type way better. If it was for maintenance reasons I agree. My comment was aimed toward power gains only.

 

That sucks, I just ordered AEM dryflow filters for my intakes. I would have gone with these.

 

why would anyone pay 30-35% more than retail?... Did you mean he charges 30-35% less than retail?... If so, where is the retail pricing? It seems no one has located a source other than AmsOil direct...

 

You can only buy Amsoil direct unless your local speed shop carries it.

 

i think he meant "off" retail pricing. but i could be wrong..lol

 

+1 otherwise he needs to find a new job.

 

just go on the site and get a consumer membership and you get good discounts and shipping is reasonable. If you order the filter and oil in the course of a year it more than pays for itself. I have been using their stuff since the late 90s and would never use anything else. Top notch quality and service. Their new oil filters are amazing.

 

I was putting my my Richie strut bar so I dug around my intake. Yeah there's hardly any room in front of the K&N cone. You could fit the Amsoil but I think the end of the cone would hit against the airbox. It's flexible so I'm sure you could coax it on there. Or you would have to cut the front of the stillen airbox away. At least some of it.

The other idea is to cut down the flange where it clamps on the stillen velocity stack. But I think we would only gain maybe 1/4" at most.

 

i meant that his cost is 30-35 below retail...i really have to stop drinking and posting

 

So I was thinking of doing this exact same thing (buy the Stillen HFA, replace the K&N with the Amsoil Nanofiber). Does anyone actually know the part # for the K&N filter that comes with the Stillen box? I checked out jameyb's link (http://www.knfilters.com/search/prod...x?Prod=RC-2960) and then compared it to Amsoil's datasheet on the 3050 (https://www.amsoil.com/storefront/eaau.aspx) which everybody seems to agree is the right cross-over.

But there's a lot of confusion here if those are in fact the correct two filters. For one thing, the media height is the same for both at 5.0 in., which would lead me to believe that if the K&N fits without rubbing the front of the airbox, then the Amsoil should too. The base diameter of the Amsoil is also an 1 1/2" shorter than the K&N (7.5 vs. 6.0), so it doesn't seem like width should be an issue either. But even if the Amsoil fits, will it perform the same or even fit at all, given the other size differences between the two filters?

I have doubts that the RC-2960 is the correct filter, especially since the Amsoil datasheet lists the K&N cross-over for the 3050 as RU-3570, not RC-2960. But then again, if the 3050 is NOT the correct Amsoil filter, then the whole argument is up in the air.

Anybody have hard measurements on the K&N, or direct experience with installing and using the Amsoil? Seriously considering just keeping the K&N - oiling the filter can't be as much trouble as trying to find the correct damn part number...

 

I don't think the 3050 is the right filter. The inside diamter of the flange on the 3050 is only 3". The Stillen Venturi ring has to be much bigger than 3" (I would guess 6" based on memory). I didn't have time to pull it out this weekend and measure.