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post #1 of 30 (permalink) Old 09-03-2013, 02:43 PM Thread Starter
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Opening up ears

Has anyone opened up the ears any?? Enlarging the little air inlet, drilling holes in underside of ear box, drilling holes in "grill" section of cover. Just a few ideas I have thought of.
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post #2 of 30 (permalink) Old 09-03-2013, 02:50 PM
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not that I am aware of.

Just curious....why would you want to?

how about doing the "ear shave" procedure if you are looking to opening up the intake....but a rejet of the carbs would be required to increase fuel flow since you increase airflow.
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post #3 of 30 (permalink) Old 09-03-2013, 03:03 PM
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Not really sure how usefull it be as the size of all the various hoses on the other side of the filter would still be the same. Drilling holes in the bottom might actually cause a vacuum allowing less air into the box.

But yes, it's been thought of before, just don't think anyones done it and gotten any better results than just leaving it alone.

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post #4 of 30 (permalink) Old 09-03-2013, 03:08 PM
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not that I am aware of.

Just curious....why would you want to?

how about doing the "ear shave" procedure if you are looking to opening up the intake....but a rejet of the carbs would be required to increase fuel flow since you increase airflow.
funny you should say that man cause i am the only one that has done it and if some one else was to do it i would say go with 42 pilot 142 mains and two shims just like the ear shave and use the k&n factory replacement filters and just open up the hole the air enters the ear from to twice its size

why would some one want to because it is cheaper to do and you retain the factory look you will not need to remove the surge tank of course and you will not need to buy the emgo breather filters either

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post #5 of 30 (permalink) Old 09-03-2013, 03:47 PM
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There is no gain. I looked at this and determined it useless. If each cylinder did not have the ability to draw from BOTH filters, it might have merit.

Anyway, there will no benefit to increased jet size. No harm though.

JMO, your mileage may vary. Let us know.
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post #6 of 30 (permalink) Old 09-03-2013, 04:12 PM
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everyone has their reasons...I wasn't putting it down, was just curious.

I know people drill holes in intakes for "better sound" so I was wondering if that was the reason.

as far as increase of intake, I don't think that would really help.
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post #7 of 30 (permalink) Old 09-03-2013, 06:27 PM
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with the factory replacement k&n filters that fit in the ears being hi flow they will allow air to pass thru them more freely just the same as the pods do for the ear shave

the reason why rejetting is not required for the k&n factory replacements is souly because they are in the ears so the air still travels thru the same size intake

when installing pods it opens up the intake so that air can enter the carbs quicker which in turn requires the engine to need more fuel to accomidate the increased air flow
creating the need to rejet

so with the drop in filters and opening the intake hole on both ears a rejet is needed because it is in fact doing the same as omiting the intake and adding pods but it is cheaper to open up the ears than shave them and you keep the stock look

as for fuel milage yes it will decrease i am getting between 90 and 110 miles out of the main tank depending on how i ride

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post #8 of 30 (permalink) Old 09-03-2013, 06:42 PM
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this is how i oppened mine up but i dont recommend openning them up that big 2 to 2 1/2 time the original size will be plenty large enough


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post #9 of 30 (permalink) Old 09-03-2013, 08:18 PM
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funny you should say that man cause i am the only one that has done it.......
Nope. Tried it this past summer, moving the inlet to the bottom of the box to get the inlet away from the direct heat off of the cylinder. Sealed the back factory holes. Cut the bottom holes to the exact size and put the rubber boots on the under side. At 4000 RPM's it would not accelerate. Spit and sputtered. Just relocating the same size holes and rubber boots,,,, and it changed the performance.
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post #10 of 30 (permalink) Old 09-03-2013, 09:07 PM
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I believe the stock filters/airbox will move more air than the pods. Just me. Not easy or I would flow bench both.

I have K&N's and stock jets.
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