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2014 / 2017 airbox snorkels

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2014 / 2017 airbox snorkels
PowerDubs_imp Offline
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#1
05-12-2018, 05:55 AM
[Image: dbbf10d7e6f2cdd838103650089aef40.jpg]
[Image: 1102d969b77d6222ebdef16acf8884a4.jpg]
[Image: d6e21dffb206ccd64190b647b52d8938.jpg]


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SportsterDoc Offline
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#2
05-12-2018, 10:34 AM
Wonder why the change (2107 on left)?
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PowerDubs_imp Offline
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#3
05-12-2018, 11:24 AM
Hard to say.

Smaller ports tend to increase velocity.

Larger ports can flow more ultimate cfm.

Longer runners tune for lower rpm, shorter lengths= higher.

The ‘bowl’ on the end may act like a plenum a bit. Smaller equals throttle response, larger equals better top end breathing.

I don’t expect the difference on the horn to make any drastic difference on it’s own.

I also have the TSR plate that replaces these horns. I will be testing and comparing all 3 on the dyno.




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SportsterDoc Offline
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#4
05-12-2018, 02:05 PM
I sliced the "bowl" off mine.
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PowerDubs_imp Offline
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#5
05-12-2018, 10:52 PM
Yea- negating any resonance tuning of the entire thing.

I'm pretty sure you would see a loss on the dyno- especially if it was lower/mid rpm and part throttle.
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DaSwami_imp Offline
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#6
05-12-2018, 11:26 PM
Interesting...
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Razor Offline
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#7
05-12-2018, 11:41 PM
(05-12-2018, 11:26 PM)DaSwami_imp Wrote: Interesting...

It is interesting & cool. Imagine a motorcycle manufacturer that’s had a model out since 2010, and they’re still reviewing engineering perspectives... and making changes. Good chance it might also be the tighter European emission standards.

Thanks for sharing, love this stuff Smile
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SportsterDoc Offline
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#8
05-13-2018, 12:30 PM
(05-12-2018, 10:52 PM)PowerDubs_imp Wrote: Yea- negating any resonance tuning of the entire thing.

I'm pretty sure you would see a loss on the dyno- especially if it was lower/mid rpm and part throttle.

Is that the effect of the TSR plate?
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PowerDubs_imp Offline
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#9
05-13-2018, 12:45 PM
I actually think the TSR plate could hurt, but the dyno will tell.


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dave Offline
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#10
05-14-2018, 11:29 PM
(05-13-2018, 12:45 PM)PowerDubs_imp Wrote: I actually think the TSR plate could hurt, but the dyno will tell.


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Can you please explain what a TSR plate is?
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