K&N Air Intake Performance Filter
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Northstar Engines and System Technical Discussion Discussion, K&N Air Intake Performance Filter in Cadillac Engine Technical Discussion; I changed the Air Filter on my 98 Northstar Deville..and replaced it with a high performance K&N cone air intake ...
  1. #1
    AbeDevilleArce is offline Cadillac Owners Member
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    K&N Air Intake Performance Filter

    I changed the Air Filter on my 98 Northstar Deville..and replaced it with a high performance K&N cone air intake filter..Is it safe that the engine is pulling in more air than the original filter???...

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    codewize's Avatar
    codewize is offline Cadillac Owners Master
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    Re: K&N Air Intake Performance Filter

    You'll probably loose some HP. It won't hurt the engine as long as you keep it cleaned and correctly oiled. They're a huge waste of money in most cases, specifically the N*.

    Do a search
    Ownership:
    91 Brougham d'Elegance 350
    02 Deville DTS
    01 Deville DTS:
    Custom installed Volant CAI
    Custom PCM
    Body color engine components
    Cruiser Alloy wheels
    EBC brakes and rotors
    Eibach springs
    Corsa exhaust
    Sportwing Spoiler
    Semi-custom interior
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    Future Plans: More interior work.


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  4. #3
    CadillacSTS42005's Avatar
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    Re: K&N Air Intake Performance Filter

    SEARCH

  5. #4
    Ranger's Avatar
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    Re: K&N Air Intake Performance Filter

    Ditto to both of the above posts. The factory filter will flow all the air that the Northstar can swallow at WOT. Do a search.

  6. #5
    codewize's Avatar
    codewize is offline Cadillac Owners Master
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    Re: K&N Air Intake Performance Filter

    Your best bet for induction changes are the Volant intake but that's also kind of a waste unless you intend on doing, at minimum, the exhaust

    Then you'll want to add a performance MAF sensor. All of that said the real gains will come when you get a new torque converter to accommodate the changes to the torque curve created by the higher air volume.

    Yeah we've done this already and I'm not sure they make any of the above mentioned parts for the 98.
    Ownership:
    91 Brougham d'Elegance 350
    02 Deville DTS
    01 Deville DTS:
    Custom installed Volant CAI
    Custom PCM
    Body color engine components
    Cruiser Alloy wheels
    EBC brakes and rotors
    Eibach springs
    Corsa exhaust
    Sportwing Spoiler
    Semi-custom interior
    Custom quad Hi-Beams
    Future Plans: More interior work.


    Memberships:
    National and regional Cadillac & LaSalle Club
    Proud Volunteer - Northstar Tuning Project
    Guinness World Records - Largest Cadillac Parade

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  7. #6
    weister42 is offline Cadillac Owners Enthusiast
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    Re: K&N Air Intake Performance Filter

    Upgrading the air intake is useless unless you have mods done to your car that allows the engine to breathe more air than stock. Things like cat-back exhaust, 80mm throttle body... Hum how come I can only think of two easy mods? Oh yeah they don't really make performance parts for our engine

  8. #7
    CadillacSTS42005's Avatar
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    Re: K&N Air Intake Performance Filter

    or the JET prototype chip
    tehe

  9. #8
    codewize's Avatar
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    Re: K&N Air Intake Performance Filter

    I just said that!

    Quote Originally Posted by weister42 View Post
    Upgrading the air intake is useless unless you have mods done to your car that allows the engine to breathe more air than stock. Things like cat-back exhaust, 80mm throttle body... Hum how come I can only think of two easy mods? Oh yeah they don't really make performance parts for our engine

    Punk
    Quote Originally Posted by CadillacETC1997 View Post
    or the JET prototype chip

    tehe
    Ownership:
    91 Brougham d'Elegance 350
    02 Deville DTS
    01 Deville DTS:
    Custom installed Volant CAI
    Custom PCM
    Body color engine components
    Cruiser Alloy wheels
    EBC brakes and rotors
    Eibach springs
    Corsa exhaust
    Sportwing Spoiler
    Semi-custom interior
    Custom quad Hi-Beams
    Future Plans: More interior work.


    Memberships:
    National and regional Cadillac & LaSalle Club
    Proud Volunteer - Northstar Tuning Project
    Guinness World Records - Largest Cadillac Parade

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  10. #9
    Submariner409's Avatar
    Submariner409 is offline If it won't run, chrome it
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    Re: K&N Air Intake Performance Filter

    With very few exceptions, almost any filter/pipe setup will flow all the air an engine needs at part throttle. The black magic of "performance" filter systems comes into play at WOT close to redline. Regardless of the filter system, there's still a butterfly valve downstream that absolutely controls flow/volume and manifold vacuum at any opening short of WOT. Go through the hassle of installing a GOOD vacuum gauge in the intake manifold plenum area. If you read less than 1" or 2" of vacuum at WOT/redline, nothing will do any better.

  11. #10
    codewize's Avatar
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    Re: K&N Air Intake Performance Filter

    This makes a lot of sense. I think air flow changes, no I know air flow changes make a big difference in the torque curve at ANY throttle position.

    I'm specifically referring to my DTS with the Volant CAI, which really is senseless calling it that because it takes air from the same place the factory box does. Just a hell of a lot more of it and you can tell.

    Quote Originally Posted by submariner409 View Post
    With very few exceptions, almost any filter/pipe setup will flow all the air an engine needs at part throttle. The black magic of "performance" filter systems comes into play at WOT close to redline. Regardless of the filter system, there's still a butterfly valve downstream that absolutely controls flow/volume and manifold vacuum at any opening short of WOT. Go through the hassle of installing a GOOD vacuum gauge in the intake manifold plenum area. If you read less than 1" or 2" of vacuum at WOT/redline, nothing will do any better.
    Ownership:
    91 Brougham d'Elegance 350
    02 Deville DTS
    01 Deville DTS:
    Custom installed Volant CAI
    Custom PCM
    Body color engine components
    Cruiser Alloy wheels
    EBC brakes and rotors
    Eibach springs
    Corsa exhaust
    Sportwing Spoiler
    Semi-custom interior
    Custom quad Hi-Beams
    Future Plans: More interior work.


    Memberships:
    National and regional Cadillac & LaSalle Club
    Proud Volunteer - Northstar Tuning Project
    Guinness World Records - Largest Cadillac Parade

    ----------------------------

  12. #11
    dkozloski's Avatar
    dkozloski is online now Cadillac Owners 10000+ Posts
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    Re: K&N Air Intake Performance Filter

    Here's the answer for CAI's. http://www.alsblowers.com/sc510.html
    Don't mess with Binky Bear!


  13. #12
    codewize's Avatar
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    Re: K&N Air Intake Performance Filter

    Street Scoop? Very sexy, but on a DeVille?
    Ownership:
    91 Brougham d'Elegance 350
    02 Deville DTS
    01 Deville DTS:
    Custom installed Volant CAI
    Custom PCM
    Body color engine components
    Cruiser Alloy wheels
    EBC brakes and rotors
    Eibach springs
    Corsa exhaust
    Sportwing Spoiler
    Semi-custom interior
    Custom quad Hi-Beams
    Future Plans: More interior work.


    Memberships:
    National and regional Cadillac & LaSalle Club
    Proud Volunteer - Northstar Tuning Project
    Guinness World Records - Largest Cadillac Parade

    ----------------------------

  14. #13
    dkozloski's Avatar
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    Re: K&N Air Intake Performance Filter

    Quote Originally Posted by codewize View Post
    Street Scoop? Very sexy, but on a DeVille?
    It makes as much sense as a Volant. The factory airbox supplies 99.99% of the engines air requirements. That means that the most there is left to gain is .01%. Anything beyond that is self delusion. Good luck!
    Don't mess with Binky Bear!


  15. #14
    codewize's Avatar
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    Re: K&N Air Intake Performance Filter

    Oh I agree with you. I'm not denying that. I got the thing on every ones recommendations then was upset when my torque curve moved so much.

    However, I think together with the Corsa and the correct MAF we'll gain a bit of HP across the board and with some fine tuning I think we can get the torque in a happy medium.

    Now whether the Volant will play a big roll in that or not I don't know but I can tell you, as I said, it definitely changed the performance characteristics of the engine by itself.
    Ownership:
    91 Brougham d'Elegance 350
    02 Deville DTS
    01 Deville DTS:
    Custom installed Volant CAI
    Custom PCM
    Body color engine components
    Cruiser Alloy wheels
    EBC brakes and rotors
    Eibach springs
    Corsa exhaust
    Sportwing Spoiler
    Semi-custom interior
    Custom quad Hi-Beams
    Future Plans: More interior work.


    Memberships:
    National and regional Cadillac & LaSalle Club
    Proud Volunteer - Northstar Tuning Project
    Guinness World Records - Largest Cadillac Parade

    ----------------------------

  16. #15
    MonzaRacer is offline Cadillac Owners Member
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    Re: K&N Air Intake Performance Filter

    Well now obviously you fellas forget the name on the front of the car.
    The basic design for most air boxes in factory cars combines both normal flow at the OEMs expected use. This doesnt mean it flows perfect nor as much air as is needed.
    One thing you fellas seem to forget it is also a silencer too for when you floor it it doesnt moan or howl.
    Ford had a real problem on the Fox platform(Mustang) and added a baffle and "horn" on them to decrease the resonance.
    Most cold air intakes remove all of the flow obstructions and rough convolutions in the air tract. A K&N flows with less restriction and as it has been tested many times since its inseption to filter the air better, with less flow restriction, over paper filters.
    Now improperly oiled it will trash a MAF or not filter properly.
    You guys forget your engine isnt pulling air in it is creating an artificial negative preasure event and atmospheric preasure pushes air into the engine.
    So in that respect you need to straighten and smooth the air flow path to the throttle body.
    Now will you see more power influences with cold air intakes with high flow filters ,but anything you do to make the engine recieve a better air charge makes and economy and power difference.
    I have actually found that on a 5 gas analyzer that some engines with advanced level computers (such as the Caddilacc) will give some slightly better emissions numbers.
    Now dont get me wrong your not going to put a $150 worth of cold air piping and a free flowing filter and make 10 or 15 horse power. But if your air lows easier then your engine can get a better air charge, then it will make same power with less throttle opening and inturn being more efficient.
    Add this to a more aggressive tuning chip/program, maybe a set of headers (I read somewhere that one of the big companies are making N* headers that I believe will fit multiple bodies the reason being is some hot rodders are using the N8/Aurora engines) and a free flowing exhaust system.
    The thing is if it meats the owners asthetic sense, and he understands its not going to make super big increases but together with other things(generally the more expensive items get done last) will make a more powerful car, more efficient engine and let the owners feel more pride in thier ride.
    I for one have found a 4.0 Aurora engine(baby N*) and have thought of picking it up for one of my Monza projects.
    Another thing you might think of , and this is something I have found works pretty much across the board on any engine, and that is a set of matched and flowed injectors. I have seen a set of N* injectors (new factory) have as much difference as 8% and that made the car a different car.
    The owner always wondered and we had 3 sets of injectors flowed and only condemed 1 out of 24 out right.
    We got 1 set with in less than 1% a set in at around 4.5% to 5% and a lesser set that (less one) in the 5% to 5.5% (the last set was bought by a fella who needed a better set of injectors for a 4 cylinder.
    The drivability was incredible (also the car was running all 8!).
    Dont discount all parts untill you have a complete team and not just one player on the field.
    Lee

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