K&N Drop in Air Filter

Discussion in 'SRT Hellcat Performance' started by Driver72, Aug 9, 2015.

  1. Driver72

    Driver72 Gold Member

    Joined:
    Mar 10, 2015
    Messages:
    1,203
    Likes Received:
    276
    Trophy Points:
    218
    Vehicle:
    Challenger SRT Hellcat
    I have used K&N drop in Air Filters in the past.
    I have dyno tested them and on some cars have seen 3-4 rwhp gains on them.
    I've seen also next to nothing.

    For the Hellcat their website says this (copy and pasting here):

    K&N's replacement air filters are designed to increase horsepower and acceleration while providing excellent filtration. We make over 1,200 different replacement air filters for virtually every vehicle on the road. These filters are washable and reusable and are custom designed to fit into your existing factory air box. Their drop-in design means adding performance is simple. With most vehicles you simply remove the disposable air filter and replace it with a K&N. See applicable instruction sheet for details. Our stock replacement air filters for street vehicles are covered by our famous K&N Million-Mile Limited Warranty™ and will be THE LAST AIR FILTER YOUR VEHICLE WILL EVER NEED.
    • Designed to boost horsepower and rate of acceleration


    Well maybe I should just order one and do some road testing again.
    It will be much easier than my AFE CAI vs Stock intake test was, as I don't have to swap out the whole box and assembly.
    Wouldn't it be funny if I saw better results from the K&N drop in filter in the stock intake than I did with the AFE CAI?
    Reality is I probably won't see any difference.
    But K&N has a 100% satisfaction guarantee as well, so it's worth a shot I guess. :)

    Oh and does anybody know of a very good, reputable high flow DRY air filter I could try too?
     
  2. Milspec

    Milspec Silver Member

    Joined:
    Feb 15, 2015
    Messages:
    206
    Likes Received:
    43
    Trophy Points:
    138
    Vehicle:
    Challenger SRT Hellcat
    Are we suppose to use dry air filter or oiled filter in these cars and whats the pros and cons of each?
     
  3. Driver72

    Driver72 Gold Member

    Joined:
    Mar 10, 2015
    Messages:
    1,203
    Likes Received:
    276
    Trophy Points:
    218
    Vehicle:
    Challenger SRT Hellcat
    Many are using both.
    There has always been divisive arguments for and against oiled filters.
    While I believe it's documented that oiled filters allow more air through, many cars that have MAF sensors that are in close proximity to the filter have gotten oil blow off on them and have been ruined. It is especially important to NOT over oil these filters after cleaning them. However, if you don't put enough oil on, particles of dirt will not be trapped in the oil and can make their way past the filter as they are much more porous than dry filter is.

    I've used K&N oiled filters on many of my cars before, only one had to have the MAF sensor replaced (was done so under warranty) and that was my 2000 VW GTI 1.8T back in middle 2000
    But the MAF sensor on those cars ended up being quite weak and many needed to be replaced. Mine needed it a week after putting the K&N drop in filter into it. So I think it was that.

    A dry filter is the safer bet to be sure, but gotta say, millions upon millions of oiled filters have been sold since they started and if they caused that many issues, there is no way they'd continue being sold.
    The MAF on the Hellcat isn't that close to the filter either, so I don't think it would be an issue.
    I'd like to test it however, just for s--ts and giggles. Chances are it will do little to nothing on a 700+ hp car.
    But you never know.
     
  4. B5 Blue

    B5 Blue Platinum Member

    Joined:
    Jan 5, 2015
    Messages:
    6,857
    Likes Received:
    1,742
    Trophy Points:
    1,178
    Location:
    Michigan
    Vehicle:
    Charger SRT Hellcat
    Green filter on mine no issues
     
    • Like Like x 1
  5. hellcat1

    hellcat1 Gold Member

    Joined:
    Sep 27, 2014
    Messages:
    10,668
    Likes Received:
    2,026
    Trophy Points:
    778
    Location:
    Michigan
    Vehicle:
    Challenger SRT Hellcat
    B5 , are you still running the bwoody intake
     
  6. Lee

    Lee Rookie

    Joined:
    Aug 9, 2015
    Messages:
    17
    Likes Received:
    3
    Trophy Points:
    3
    Vehicle:
    Charger SRT Hellcat
    Anyone installed k&n CAI
     

    Attached Files:

  7. Driver72

    Driver72 Gold Member

    Joined:
    Mar 10, 2015
    Messages:
    1,203
    Likes Received:
    276
    Trophy Points:
    218
    Vehicle:
    Challenger SRT Hellcat

    Is this the one you are talking about:

    Green Filter - Part 7139

    If so, looks like they have an awfully large black rubber border around that thing. That could restrict some air flow. They could of made the black rubber seal border half that wide and made the filter a bit larger allowing more air in I'd think.
    It looks like an oiled filter too? Is it?
    If so, the K&N is cheaper, would do the same thing, and they have oodles more experience building them, so I'd probably just go K&N over the "Green Filter".

    But I would like to find a "high flow" drop in DRY filter too.
     
    Last edited: Aug 10, 2015
  8. soundman5000

    soundman5000 Silver Member

    Joined:
    Jun 25, 2015
    Messages:
    531
    Likes Received:
    121
    Trophy Points:
    153
    Location:
    Murrells Inlet, South Carolina
    Vehicle:
    Challenger SRT Hellcat
    The only thing I use a K&N in is my old 1997 carbureted Harley. I have found over the years MAF sensors don't like the oil from the k&n. Never had one go bad but on my crown vic the engine would get sluggish after as little as 500 miles. I would then use CRC MAF cleaner http://www.amazon.com/CRC-05110-Mass-Sensor-Cleaner/dp/B000J19XSA and my performance would return. Only paper filters for me now on MAF cars.
    Also, I could never butt dyno any difference using K&N with a turbo, SC car.
     
  9. B5 Blue

    B5 Blue Platinum Member

    Joined:
    Jan 5, 2015
    Messages:
    6,857
    Likes Received:
    1,742
    Trophy Points:
    1,178
    Location:
    Michigan
    Vehicle:
    Charger SRT Hellcat
    No
     
  10. B5 Blue

    B5 Blue Platinum Member

    Joined:
    Jan 5, 2015
    Messages:
    6,857
    Likes Received:
    1,742
    Trophy Points:
    1,178
    Location:
    Michigan
    Vehicle:
    Charger SRT Hellcat
    Go to their website, I like the green filter. This was an old debate long ago before CAI. Use search function GREEN
     
    • Agree Agree x 1
  11. Milspec

    Milspec Silver Member

    Joined:
    Feb 15, 2015
    Messages:
    206
    Likes Received:
    43
    Trophy Points:
    138
    Vehicle:
    Challenger SRT Hellcat
    I can't order Green Filters in canada however i just Ordered this K&N 33-2460 Is that a dry Filter too?
     
  12. B5 Blue

    B5 Blue Platinum Member

    Joined:
    Jan 5, 2015
    Messages:
    6,857
    Likes Received:
    1,742
    Trophy Points:
    1,178
    Location:
    Michigan
    Vehicle:
    Charger SRT Hellcat
    No it's oiled. If you want dry try DryFlow air filter 28-20460
     
    • Agree Agree x 1
  13. hellcat1

    hellcat1 Gold Member

    Joined:
    Sep 27, 2014
    Messages:
    10,668
    Likes Received:
    2,026
    Trophy Points:
    778
    Location:
    Michigan
    Vehicle:
    Challenger SRT Hellcat
    Or try aem... They make a hellcat filter
     
  14. Driver72

    Driver72 Gold Member

    Joined:
    Mar 10, 2015
    Messages:
    1,203
    Likes Received:
    276
    Trophy Points:
    218
    Vehicle:
    Challenger SRT Hellcat
    Thanks guys for input into the dry filter choices.
     
    • Like Like x 1
  15. Milspec

    Milspec Silver Member

    Joined:
    Feb 15, 2015
    Messages:
    206
    Likes Received:
    43
    Trophy Points:
    138
    Vehicle:
    Challenger SRT Hellcat
    Yea thanks !!! I just canceled my order and placed one for this filter !!! Saved me thanks
     
    • Like Like x 1
    • Agree Agree x 1

Share This Page

Search tags for this page
best air filter for hellcat
,
charger hellcat any gains from a k&n drop in filter
,

dodge hellcat dyno with k&n drop in filter

,
drop in filters increase horsepower dyno
,
hellcat drop in air filters
,
hellcat drop in filter
,
k&n drop in dry filter
,
stock intake with k&n drop in air filter