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Thread: Intake Resonator replaced (pics inside)

  1. #51
    Jr Member vblanche's Avatar
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    Default Re: Intake Resonator replaced (pics inside)

    you guys have all tools, etc... to do these mods...I don't . anyway, still want to try...

    Also, will this "CAI" stay in place? no risk of detachment?

    What happens with these parts in red? gone?



    and what should I do with these connectors (red circle)
    Last edited by vblanche; 05-15-2007 at 10:37 PM. Reason: noob, need help
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    Sr Member -RJ3-'s Avatar
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    Default Re: Intake Resonator replaced (pics inside)

    Vblanche, If you take the above circled pics, you end up making a true CAI, but you need to have the MAF sensor intact, and the blue tube that connects to the stock intake box. Also, seeing that the airbox is also a question, you need to have a cone at the end of your intake.

    If you want to get rid of the airbox, my suggestion is to not remove #2 circled diagram, and add a cone at the end of your pipe.

    Hope this helps you out
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    Jr Member Walrus's Avatar
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    Default Re: Intake Resonator replaced (pics inside)

    No. You are only removing items 4 and 8.

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    Default Re: Intake Resonator replaced (pics inside)

    You don't touch anything you see when you open the hood genearly except you take out 4 and replace it with a cap.
    Then after that you just gotta take out the resonator, I think skarbro replaced his OEM filter with a K&N drop-in so if you don't plan to get a real CAI you should prob get one of those too.
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    Sr Member Skarbro's Avatar
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    Default Re: Intake Resonator replaced (pics inside)

    Yeah I only got rid of items 4 & 8 which are the intake resonators. Everything else is intact. And yes I recommend getting a K&N drop-in filter, although I'm sure you can get away with the regular filter.

    Vblanche - The parts are solid. I didn't even need to put any extra support because the piping is really light and the coupler is really strong.

    Walrus - Looks great! I can't help feeling that there is a phallic notion in there somewhere. And the fact that you have a "Woody's" decal on your toolbox doesn't help either. LOL
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  6. #56
    Jr Member vblanche's Avatar
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    Default Re: Intake Resonator replaced (pics inside)

    Now, I'm a bit confused...where did you connect the PVC pieces? on #7 instead of #8? (red circle image below)

    LOL...thought it was on #9...because of installation of CAI (fujita, etc...)

    Last edited by vblanche; 05-16-2007 at 08:12 AM.

  7. #57
    Sr Member Skarbro's Avatar
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    Default Re: Intake Resonator replaced (pics inside)

    Quote Originally Posted by vblanche View Post
    Now, I'm a bit confused...where did you connect the PVC pieces? on #7 instead of #8? (red circle image below)

    LOL...thought it was on #9...
    You're removing #8 and connecting the 3" coupler to #7 where your red oval is. Essentially you are replacing #8 with the new piping.

  8. #58
    Jr Member vblanche's Avatar
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    Default Re: Intake Resonator replaced (pics inside)

    ok...thanks.

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    Moderator cwp_sedan's Avatar
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    Default Re: Intake Resonator replaced (pics inside)

    Quote Originally Posted by vblanche View Post
    Now, I'm a bit confused...where did you connect the PVC pieces? on #7 instead of #8? (red circle image below)

    LOL...thought it was on #9...

    It would be connected to #8. You aren't replacing the filter box and stock tubing connected to the throttle body. You are only replacing the stock resonator (#8) with some PVC tubing. The PVC connects to #7. You would also be removing #4 completely and capping it off as well.

    Yeah what he said...lol
    Last edited by cwp_sedan; 05-16-2007 at 08:12 AM. Reason: too slooooow...

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    Jr Member vblanche's Avatar
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    Default Re: Intake Resonator replaced (pics inside)

    it doesn't seem easy w/o removing the bumper...

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    Jr Member Zubbie's Avatar
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    Default Re: Intake Resonator replaced (pics inside)

    I wish I woulda tried something like this before I got my intake.
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    Default Re: Intake Resonator replaced (pics inside)

    Quote Originally Posted by vblanche View Post
    it doesn't seem easy w/o removing the bumper...
    It takes a bit of work to get it out just because of the bolt locations.

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    Default Re: Intake Resonator replaced (pics inside)

    Quote Originally Posted by Zubbie View Post
    I wish I woulda tried something like this before I got my intake.
    Zubby, the fujita CAI is worth it. This just isn't the same.

  14. #64
    Jr Member Zubbie's Avatar
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    Default Re: Intake Resonator replaced (pics inside)

    Quote Originally Posted by sp3GT View Post
    Zubby, the fujita CAI is worth it. This just isn't the same.
    Oh I know, I love it...
    But I wish I woulda tried this just to see the difference it makes

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    Default Re: Intake Resonator replaced (pics inside)

    There's a link on M3F where someone took out the resonator and ran it on the dyno, and there was a decline in HP and torque. The guy dyno'd his car multiple times with different things added/removed.

  16. #66
    Sr Member Skarbro's Avatar
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    Default Re: Intake Resonator replaced (pics inside)

    Well this is a little more than just removing the resonator. But it would be best to get dyno comparisons.

    BTW, I can't find the link on the other board. Do you have it?

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    Jr Member vblanche's Avatar
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    Default Re: Intake Resonator replaced (pics inside)

    Quote Originally Posted by Skarbro View Post
    BTW, I can't find the link on the other board. Do you have it?
    +1

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    Default Re: Intake Resonator replaced (pics inside)

    Quote Originally Posted by queens49 View Post
    There's a link on M3F where someone took out the resonator and ran it on the dyno, and there was a decline in HP and torque. The guy dyno'd his car multiple times with different things added/removed.
    I actually wouldn't be suprised, before I got the Mazda 3 I had a civic si (05) and it loses power after resonator is removed.

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    Sr Member Gizzmo_jr's Avatar
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    Default Re: Intake Resonator replaced (pics inside)

    It can't be a serious amount, and my K&N has got to help somewhat. If anything what is lost is gained? For me, while i'm working in the engine...the sound without the resonator is totally worth it. Can't knock a free mod
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    Member KenYork's Avatar
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    Default Re: Intake Resonator replaced (pics inside)

    When I first removed the resonator I felt the loss in power as well. When I saw Skarbro post this mod up I figured this may work. Just like someone mentioned(I don't remember who), look at how a retail CAI is shaped and designed. The opening(filter) is in a location of the engine compartment where cooler air resides(about where the resonator opening is), as opposed to where the airbox opening is (next to the engine).

    From where i look at this, it's not much different from a retail CAI just that it has the filter in a different location.

  21. #71
    Sr Member Skarbro's Avatar
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    Default Re: Intake Resonator replaced (pics inside)

    I just got some limited generic information from a friend that works with engineers who design intake systems for cars. Here's what he told me:

    So, I just spoke to one of our Senior Engineers who has been working with ******* for 7 years.

    Resonating air does NOT improve airflow. The resonators are mainly there for noise reduction purposes. If you ripped out your stock system and just left the drop in filter you would actually have a decrease in air flow. By replacing the stock AIS system with a smooth pipe (CAI) as we all know you will obviously increase air flow, but increase engien sound as well.
    Now, this is a very general statement and I'm sure it's not true for all applications. But it it interesting info nevertheless.

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    Default Re: Intake Resonator replaced (pics inside)

    Quote Originally Posted by Skarbro View Post
    Well this is a little more than just removing the resonator. But it would be best to get dyno comparisons.

    BTW, I can't find the link on the other board. Do you have it?
    It's in this thread, this guy did a lot of dyno runs with different things.

    http://www.mazda3forums.com/index.php?topic=56566

  23. #73
    Jr Member Walrus's Avatar
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    Default Re: Intake Resonator replaced (pics inside)

    Yeah but, he removed the resonator, and didn't put something on like we are doing to bring in the cold air.

  24. #74
    Sr Member Skarbro's Avatar
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    Default Re: Intake Resonator replaced (pics inside)

    Awesome. Thanks for the link. Here's his post. The key part that we're interested in is in red:

    I was a bit surprised at the results. Not only did we see a loss in low-end torque as many predicted (actually below about 1360 there's a HUGE drop in torque and whp, but we hardly care about that low of a RPM range for racing applications) but we actually saw a loss in peak whp as well (about 123 vs 126 stock)! The reason for this is pretty simple though. While you are removing some airflow restrictions, you're also pulling much hotter air as verified by the IAT sensor readings I took during the session. If you take a look at how the stock intake is setup, it actually pulls cool air from behind the headlights where other CAIs sit. If you look at the right side of the lower grill, there's small air deflector which defects the cooler outside air towards this area, hence why our cars are perfectly setup for CAIs. There is no performance benefit to be made from just removing the stock resonator and keeping the stock intake – simple as that. It just sounds cooler. Now get over it.
    This is good news for my mod.

  25. #75
    Member KenYork's Avatar
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    Default Re: Intake Resonator replaced (pics inside)

    Yep.. i knew i read that somewhere.

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