Just installed K&N for 3.2L - Page 2
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Cadillac CTS First Generation Forum - 2003 - 2007 Discussion, Just installed K&N for 3.2L in Cadillac CTS Coupe, Sport Sedan and Sport Wagon Forums; I don't know if the airboxes are the same part number or not for the 3.2 and the 3.6 (Miscreant?). ...
  1. #16
    odysseus's Avatar
    odysseus is offline Cadillac Owners Connoisseur
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    Re: Just installed K&N for 3.2L

    I don't know if the airboxes are the same part number or not for the 3.2 and the 3.6 (Miscreant?). When I gutted the 'paper' filter to make room for the AirHog in the frame, I found that it was not really 'paper' but some very strong fiber based medium (polyester fiber?). It was a real bear to get all of it out from the glued edges (took almost 2 hours to cut with a razor knife and sand smooth). This was the factory filter (6500 miles) that came on my car. Incedentally the dirt was restricted to a ~4" diameter circle in the center, due to the design of the stock airbox.

    Since the second airbox feed is hidden behind the headlight assembly and front bumper, there is probably no more chance that water will get I than with only the stock feed hole in the inner fender. If it does, I think the effects would be temporary as the filter would be quickly 'dried' by the volume of air being sucked in from a hot engine. I don't think it would damage the media. It appeared to be some kind of synthetic material (and fairly dense for an air filter, IMHO).

    Also, I think the Volant system (and a modified stock airbox) has an advantage over the K&N system in that it has an enclosed airbox, with little chance of sucking in hot air from under the hood. I'm not sure how well the K&N system seals from that hot air, given that it relies on the hood for the top of the 'air box'. It looks from the pictures that the rear is still somewhat open. The key to increasing efficiency here (as we all no doubt know), is not just higher flow (from less intake restriction), but cooler air.

  2. #17
    pulsch's Avatar
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    Re: Just installed K&N for 3.2L

    Quote Originally Posted by odysseus
    Also, I think the Volant system (and a modified stock airbox) has an advantage over the K&N system in that it has an enclosed airbox, with little chance of sucking in hot air from under the hood. I'm not sure how well the K&N system seals from that hot air, given that it relies on the hood for the top of the 'air box'. It looks from the pictures that the rear is still somewhat open. The key to increasing efficiency here (as we all no doubt know), is not just higher flow (from less intake restriction), but cooler air.
    After installing a Borla "true cat-back" (seperate pipes from each cat) dual exhaust system and a Volant airbox, the mileage of my 3.2 automatic increased by 3 or so mpg. Performance is better and the low exhaust tone sounds very aggressive at full throttle.
    Attached Images

  3. #18
    RobertCTS's Avatar
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    Re: Just installed K&N for 3.2L

    A bit of B.S. in this thread. I installed the K&N charger but removed it. Why? It has no real air box. The seals are lousy and it sucks in to much engine compartment air. I sold it to a guy in the Forum. He has since removed it and went to the Volant

    I know have the Fram AirHog in my factory box. The Box was modified to flow more air. I have the 3.6 and I'm telling you there is a noticable difference.

  4. #19
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    Question Re: Just installed K&N for 3.2L

    Quote Originally Posted by RobertCTS
    I know have the Fram AirHog in my factory box. The Box was modified to flow more air. I have the 3.6 and I'm telling you there is a noticable difference.
    What modification did you make?

    K

  5. #20
    RobertCTS's Avatar
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    Re: Just installed K&N for 3.2L

    Quote Originally Posted by kylerk
    What modification did you make?

    K
    Check out this thread. It shows the airbox mods.

    http://www.cadillacforums.com/forums...light=Air+Mods

  6. #21
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    Re: Just installed K&N for 3.2L

    The seals on the 3.2 K&N look and feel secure as I was installing them and with the hood down the filter is pretty much sealed from engine heat with the supplied shield. Some people like the volant, others the K&N and others mod the airbox its just about prefference I dont see any "B.S." in this...

  7. #22
    RobertCTS's Avatar
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    Re: Just installed K&N for 3.2L

    Quote Originally Posted by jbl16
    The seals on the 3.2 K&N look and feel secure as I was installing them and with the hood down the filter is pretty much sealed from engine heat with the supplied shield. Some people like the volant, others the K&N and others mod the airbox its just about prefference I dont see any "B.S." in this...
    Heres a test for you. Put a film of vaseline or such along the rubber seals. You should have a vaseline imprint on the bottom of the hood and other contact points. I didn't. Maybe you'll get a better fit. But even then your air a best is coming through a 3" hole...right?

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