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Re: Alternative to airbox mod [Re: paco] #135099 12/11/16 07:02 PM
Joined: Sep 2007
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Jerry XT Offline
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I ended up using 3 - 3/4" conduit plugs (required 1 1/8" holes)
all 3 fit across the top of the airbox hidden by the side cover
now need to wait until summer in CO to test out!
(that won't come fast enough!)


JJ 2007 XT225
Re: Alternative to airbox mod [Re: paco] #135102 12/11/16 11:05 PM
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alexd Offline
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I find that with a 127.5 main jet, Z1 mod, 3-turn mod on standard #40 Pilot Jet, and removed snorkel...that the only thing required between Sea Level and 13,000' is a small increase (mechanically) of the idle speed setting/adjustment at altitude. There's just less HP up there...

(Obviously the plugs are IN at Sea Level, and OUT above 8000' or so)

Alexd

Last edited by alexd; 12/11/16 11:05 PM.

(one) 2006 XT225, (two) 2005 XT225, 2006 FZ1
Re: Alternative to airbox mod [Re: paco] #135109 12/12/16 01:03 AM
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Jerry XT Offline
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great! I have everything I need.
got a 127.5 and 130 jet
come on summer!


JJ 2007 XT225
Re: Alternative to airbox mod [Re: paco] #135145 12/13/16 07:11 PM
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Jerry XT Offline
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Here's how my mod came out, hope pics are not to dark




JJ 2007 XT225
Re: Alternative to airbox mod [Re: paco] #135147 12/13/16 09:29 PM
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Selden Offline
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Very professional. Please keep us posted on how it performs with 1, 2, and 3 holes open (assuming there is any noticeable difference).


Don't fix it if it ain't broke, don't break it if you can't fix it.
Re: Alternative to airbox mod [Re: paco] #135148 12/13/16 09:38 PM
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Jerry XT Offline
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Thanks! my holes were a bit off the target but good enough!

I was thinking poping a plug every 3000' in altitude for starters and just adjust from there


JJ 2007 XT225
Re: Alternative to airbox mod [Re: Jerry XT] #135150 12/14/16 05:30 AM
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alexd Offline
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Nice work. You could actually "jet" to run a bit rich at Sea Level, and open up one plug to compensate.

Alexd


(one) 2006 XT225, (two) 2005 XT225, 2006 FZ1
Re: Alternative to airbox mod [Re: paco] #135152 12/14/16 02:58 PM
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Jerry XT Offline
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good idea....give me something to do until summer

I don't ride the streets much in Florida cause the distracted drivers scare the crap out of me!

I just ride the hood to exercise the bike and am looking at some nearby motorcycle parks. But I must admit, after riding 6 summers in CO, not much in Florida excites me.....:(


JJ 2007 XT225
Re: Alternative to airbox mod [Re: paco] #135199 12/17/16 07:13 PM
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Jerry XT Offline
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air box mod installed and ready for testing

can't tell it's there....



JJ 2007 XT225
Re: Alternative to airbox mod [Re: Jerry XT] #135204 12/18/16 07:03 AM
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alexd Offline
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Very nice! If you're in the Winter Haven area in early January, perhaps we'll meet.

Alexd


(one) 2006 XT225, (two) 2005 XT225, 2006 FZ1
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