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Discussion Starter · #1 ·
Ok all (I posted this on the other forum and thought I should share it here too).....

During my personal inspections of my beloved Cross Country... I discovered
something about the air box/intake area that I did not like at all. Specifically.. The air box silencer Victory put on the front top portion of the air filter intended to decrease intake sound levels. YUK!!!

This maybe good for lowering intake sounds and allowing the radio to sound great for the average rider.. But I do not like the added air intake restrictions.

After the weather breaks andafter I installmy oil type high flow air filter, my exhaust andmy LloydzFI tuner. I plan to do somebefore and after dyno and road testingto see if my Cross Country canbenefit fromthe extra air.

Again, I am no expert but I have tuned my share of bikes. I subscribe to the idea that the more air & fuel (tuned properly of course) in and then let out unrestricted(within reason here, with an appropriate exhaust that doesn't kill my low end grunt or break my ear drums)... THE BETTER!!

Over the years, I have been able to locate my share of free hidden power within quite a few of my bikes factory air boxes.

(Somerecent Updates regarding this:)

When I installed my high flow air filter. What I noticed is that the silencer Assembly, as a whole, does partially hold the air filter in place (which had already been brought to my attention). However, what I did not realize is that the rubber weather strip (on the top of the assembly) separates effortlessly from the base portion.

So, there you have it.. The base can remain and the weather strip can be removed to allow more air. If you do not like the added intake noise, put the weather strip back in place.
The weather strip is 12 inches long. It is actually about a full inch high but the lip of the silencer piece sits inside it halfway to attach itself.

By removing it, you open up a 1/2 inch gap 12 inches long, effectively 6 inches of a new air doorway. Like KevinX and Idiscussed, the real question is if the Xbikes can utilize the extra air. Don't forget you need more fuel along with any extra air and less exhaust restrictions to benefit from this.
I spoke to Lloyd Greer on the telephonethe other dayand we discussed this silencer restriction. He stated that he was aware of it and that they had something in the works regarding this restriction.
Just a tip for any of you that might be interested. I would only do this mod if your using a oil type air filter becuase it will protect you from moisture. I wouldNOT do it with apaper style element.
Wicked Webby
 
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sweet picture...do you have software with the bike breakdown like that?
 

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Discussion Starter · #3 ·

h7wae14t,
No I don't. Compliments of the net.
WW
 

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Discussion Starter · #6 ·

Racky,
If you do a google and select images then type in: 2010 Victory Cross Country frame. I think that is what I did.
WW
 

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I googled for some of these frame pictures, and instead I got all kinds of scantily clad blonde women.....

A couple hours later (where does the time GO?! How do blondes do THAT?!) I realized that I had searched for "swedish blonde twins" instead of " 2010 cross country frame pictures".

Not really a point here- more of a cautionary tale!

:)
 

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Discussion Starter · #8 ·

Hahaha,
Where does the time go?
WW
 

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Discussion Starter · #9 ·

(UPDATE) Posted on the VMC under the Xbikes section titled: NEW DYNO RESULTS! RPW's.
A big thanks to Stuart and KevinX for testing out my proposed air box fix..

Removing this massive air obstruction (basically opening the air box doorway up 12 x 1/2 inch) gains 3 peak HP and 11 peak tq at the tire on the dyno!!

I plan to dremel down the remaining plastic lip (its another 1/2 inch). I hope to be able to do this without disrupting the integrity of the plastic that holds the air filter in place.

This would open up the air box doorway 12 x 1 inch. Thats twice as large as just removing the rubber weather/noise strip.
I will keep you all posted.

Wicked Webby
 

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So if Iremoved my"massive air obstruction (basically opening the air box doorway up 12 x 1/2 inch)" Will I have to get the mapping done onmy stock bike?
 

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SirP said:
Is that really a silencer? To me to looks like it protects the airbox from getting rain in it. After all, it is a touring bike and you could easily get caught in rain on trips.
It's really a silencer. You are not going to get enough water through there to have the slightest worry. Hell, I rode through multiple years of the typical Florida thunderstorms everyday with an open filter, and not so much as a hicup. That was on a steel frame bike. These X bikes have a lotmore closed filter even with the strip removed
 

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DaveE said:
So if Iremoved my"massive air obstruction (basically opening the air box doorway up 12 x 1/2 inch)" Will I have to get the mapping done onmy stock bike?
Good question. Im thinking yes???
 

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So, as it is (or was) a silencer, how much noisier is it with those bits missing?
 

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So r u saying I can do this mod and not do anything else? I don't want to do this "mapping" stuff or anything else. But, if I can get some more power and noise by just doing this simple mod, "sounds good to me". Just want to make sure I don't screw something up by doing this.
Keep the suggestions coming!! THANKS
 

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It's interesting people claim seat of the pants improvements at low RPM ranges considering airflow requirements are a combination of displacement and RPM. At lower RPM's the current system's CFM ratings should be quite adequate. Only under high RPM would the engine's need for air exceed the system's CFM capability.

The reported increase in HP and Torque are at the peak but it would be interesting to see the entire torque curve with and without this strip.
 

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I definitely feel less "sputter" at low rpm. I'm also surprised at the changes. Perhaps it's just the availability of extra air that makes the difference. I just know there is less chatter when I open the throttle at low rpms.
 
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