Will a drop in K&N Filter help or hurt?

Discussion in 'SRT Hellcat Performance' started by wolfmann442, Apr 6, 2015.

  1. wolfmann442

    wolfmann442 Silver Member

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    If it will help, will i need a tune?
     
  2. B5 Blue

    B5 Blue Platinum Member

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    No tune needed, I use a Green filter in my 5.7
     
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  3. Driver72

    Driver72 Gold Member

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    Drop in aftermarket filters won't do much of anything.
    The potential of more harm than good exists after you clean it and re-oil it.
    Too much oil and you mess up for A/F Sensor, not enough oil and you risk dirt particles getting past the filter and into your engine, which as you can imagine, is no good.

    I used K&N drop in filters for years, and was always very cautious of cleaning and re-oiling them.
    I was like the 9th person in California to get a VW GTI 1.8T back in 2000. Back then I was eager to etch out more power as quickly and cheaply as possible. Used an aftermarket K&N filter when I could.
    A year later cleaned it, re-oiled it, fouled out my A/F Sensor within a week.
    Took it out, put paper filter back in, took it to dealership for warranty work.

    Never had it happen since, because I was more cautious not to over oil. But you ALWAYS sit there wondering, "is that enough oil"? Then if you spray more on, you feel you might have put too much and then feel you want to dab it off with a paper towel.

    Never have I noticed ANY performance gain in the 8-10 cars I put them in.
    So unless you are going for a full on aftermarket CAI system, just stick with the paper filters.
    The promise of more HP and better fuel economy for cars from a K&N drop in filter alone, was probably done after much testing and finding they got 1 hp more and averaged .1 mpg better. Not worth the trouble.
     
  4. hellcat1

    hellcat1 Gold Member

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    Cai is the way to go...
     
  5. SRT_HC_707

    SRT_HC_707 SRT_HC_707 Staff Member

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    Or you can just run without an air filter LOL.... NOT!
     
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  6. hellcat1

    hellcat1 Gold Member

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    Funny story,I was driving around the offer day and it was windy,, seen a brand new mustang with a plastic bag stuck to the front of the car,, can you imagine if that was a hellcat,, our car would of stopped running,, plastic bag in the air box,, dodge would love to see that warranty claim
     
  7. SRT_HC_707

    SRT_HC_707 SRT_HC_707 Staff Member

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    I would imagine it could stall your car out but the air filter should stop the back. Open up housing and clean it out (just like your shop vac).

    They always advertise 6.5 (or whatever) HP shop vacs. We have a 707HP shop vac.... Remember though it's not a wet/dry vac.... Dry ONLY!
     
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  8. hellcat1

    hellcat1 Gold Member

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    Did it say anything about getting horse hair in the air box,, lol
     
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  9. MikeD1

    MikeD1 Silver Member

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    On a 707 HP car you will never notice the few extra ponies any aftermarket CAI is going to deliver, even if they actually make the extra 10 or 12 HP claimed (which is highly doubtful). You can get way more power variation than that from day to day based on current environmental conditions (ambient air temp, quality of gas etc. etc.). Let's face it, other than a handful of guys who will run these @ the track or go to some track days event, most will very rarely (if ever) get pushed to anywhere near their limits. The only other reason would be to increase the noise level coming from under the hood, but these cars are already pretty loud, so again probably not going to be real noticeable.
     
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  10. SRT_HC_707

    SRT_HC_707 SRT_HC_707 Staff Member

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    I need to post up an address. All you guys that are removing your paper air filters and replacing your brake pads should send them to me. I'll have lifetime supply of air filters and OE pads LOL.
     
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  11. hellcat1

    hellcat1 Gold Member

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    I have had CAI on a few of my cars,, and I have noticed better throttle response,,, but this is my first supercharged car,, so I'm new to this game
     
  12. FreightTrain

    FreightTrain Comfortably Numb

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    they should of used quick clips instead of screws so it can be cleaned on the fly.. since it can easily happen
     
  13. hellcat1

    hellcat1 Gold Member

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    I agree,, when I changed my filter I lost one of the screws in the bumper cover area, had to order one from the dealer,, that listed two, so I ordered both,different part numbers,, but same part
     
  14. gilgamesh

    gilgamesh Silver Member

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    Does K&N make a drop in that will fit these cars?
     
  15. LForst

    LForst Driver of Badassery

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    I noticed better throttle response with the K&N been using them for years never had any issue with MAF sensors , trick is to not drench them , I usually clean them at every oil change
     

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