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Discussion Starter #1
Hi,
Anyone want to chime in with advice/Pics on cutting holes in the Top Airbox Piece? I plan to go Vmod-1 on my Stock 06D Pipes, I have a K&N AF and will be getting a Power Vision.

My thought is cutting holes and leaving the IAT Sensor as is.
Hoping you can get good air-flow with the holes made in a logical pattern, and that it would be less "noisy" than fully topless.
Although I might like the sound of Topless when I try it first.

Thx!
 

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"Vrod King"
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:hmm: Once you modify the pipes you are not going to hear if there is anymore noise coming from the top side with holes drilled or topless.
 

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I'll try and get you pics of mine tomorrow.

You could always drill holes on the airbox cover, and go full topless later if you change your mind.

Sent from my SM-G960U using Tapatalk
 

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This has been a long going discussion and thanks to that link I see the purpose of removing the air box cover. The cams are modified.

I have tried three different airbox configuration, because I am used to doing that type of thing on a racebike. I have tried closed, topless and currently running extra holes. The intakes are matched the the airbox cover I have.

There will be little or no difference in performance. The Vrod is only going to take in so much air. If you deristrict the pipes then the bike will pull slightly more air than restricted pipes.

There was a guy who spent money on one of those fancy aluminum air boxes and his mpg did not change. Suggesting there was no real improvement in performance.

If you cut off the tip off the airbox cover that will likely give you the extra air the bike will look for.
 

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Discussion Starter #8
Thx Mromaus
Follow up -
I went ahead with the stage 1 upgrade - 06 D - Vmod-1, K&N & Topless. PowerVision SE Tune. Just ziptied the IAT for now.
Love it. Better sound but not nearly obnoxious level.
Butt- Dyno results - definitely snappier - Honks up in High RPM's.
Extra Throttle Body noise doesn't bother me. Sounds cool.

I Modified an extra Bottom AirBox "tray" - cut away all the extra plastic except the part holding the Air-Filter. Gonna see how "bottomless" runs.
Plan on putting a grommet in the side of the AF housing to hold the IAT inside.
Then start working on tuning out some o the Decel Popping.

Powervision was big bucks but real time display gauges are nice and I wanted a pretty idiot-proof way to flash the ECM..So far so good!

Lastly I got my eye on a same color, damaged AirBox Cover that I hope to get cheap and make custom air intake scoops on. Maybe won't get me much on that - might be cool though?
 

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Departed the Fix.
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Here you go.....

Two sides and the front. The small hole on the front one is where H-D says to put the IAT sensor (drill a little smaller than they say to make it fit-- or just epoxy the thing in the hole, which is what I did).

I had to dig a fair while on my computer to find these.

When you print them out, they should be the right size to use as a topless template.

R.
 

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Regarding ram air scoops.

Be careful in the rain, I am using an airbox cover with the inlets on the sides (kind of looks like a cobra head). As soon as it starts to rain my bike stutters because it is sucking in water.
 

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Regarding ram air scoops.

Be careful in the rain, I am using an airbox cover with the inlets on the sides (kind of looks like a cobra head). As soon as it starts to rain my bike stutters because it is sucking in water.
Suggestion: Look up "Outerwears" hydroscopic material. It allows air to pass through, but not water.

I took out the false backing plates on the F and installed the material instead (which took a little bit of creativity). Got more airflow, and NO water ingestion into the filter area.

R.
 

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"Vrod King"
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Regarding ram air scoops.

Be careful in the rain, I am using an airbox cover with the inlets on the sides (kind of looks like a cobra head). As soon as it starts to rain my bike stutters because it is sucking in water.
Rule #4 - Don't ride in the rain. Wait a few minutes. It's goin' stop.
 

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Suggestion: Look up "Outerwears" hydroscopic material. It allows air to pass through, but not water.

I took out the false backing plates on the F and installed the material instead (which took a little bit of creativity). Got more airflow, and NO water ingestion into the filter area.

R.
That is a pretty innovative idea. I will check that out.

If I'm on a long ride down here I will sometimes have to ride through a nasty storm. If I stopped every time it rained I wouldn't be able to go any where. Thankfully with the heat I dry off pretty quick.
 
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