I just changed my Injen filter (the one that came with the intake) about 2 weeks ago to a K&N. The K&N is smaller than the injen (overall), which actually suprised me...since the Injen is pretty small to begin with.

I've noticed that the car is quieter but it also doesn't seem to pull as hard. I also noticed that the car doesn't rev as high...hits a wall like it did with the stock intake setup. Anyone else having similiar issues? Is there a better filter out there? I've heard people mention warpspeed or something...

 

Yeah, you are probably about .5 slower in the 1/4 now. Filters make such a huge HP difference, so yeah.

 

Probably the smaller filter. Get a bigger one

 

is your K&N filter over-oiled?

 

I'll take a look...but I didn't add any oil to it, so it would have had to be over oiled from the factory.

Maybe I'm just going crazy....but it's definitely not revving as high anymore.

 

I switched to a larger K&N on my injen and the car feels quicker.

 

Which K&N filter did you put on your Injen intake? I replace the filter that came with Injen with K&N RR-3001 (Inverted design and bigger). I would say overall its better than the Injen filter (Had 15K miles on the filter when i replace it, very dirty!).

 

It definitely isn't bigger, so it's probably not the RR-3001. I guess I'll have to drop another $45. Crap.

 

I am using the K&N 2820...IIRC. It's a good bit bigger than the Injen. Car seems a bit louder at WOT and pulls great!

 

Just checked...looks like I'm running the rr-3700....which someone reccomended! DOH! I'll check out the other two you guys mentioned....cause this one sucks.

 

possible....I have heard couple 4th genner's MAF got messed up by fatory "over-oiled" panel filter.

 

are you sure thats the correct number? the only rr part numbers are the inverted ones which in 3" inlet are only rr-3001 through rr-3003. i have always recommended rr-3003 and ru-2820 as good replacement filter. the ru-2820 will be cheaper but will not have the inverted top.

 

Smaller filter= less air flow, so there is no surprise there. Not to mention the fact that you could spit through an Injen filter.

RU-2820. $35 shipped at ajusa.

 

Then sell your injen filter on ebay. Mine went for $28

 

My bad, I have the rU- 3700.

Does the inverted top make any difference?

 

That reminds me. I want to clean mine cause it's not as loud as before.
Bahahaha.

 

You could pick up a K&N RU-2820 from me, it's the biggest that will fit, $35 shipped and in stock.