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#142375 - 08/01/18 09:58 PM California Smog Junk
charleslabri Offline
Junior Member

Registered: 08/01/18
Posts: 9
Loc: San Francisco
I just picked up this Xt225 (2002) and noticed a large smog canister (that a cc?). I figured there would be some california smog trash on here that id like to remove.
Maybe there, carb changes, airbox changes, etc.

Anyone have any tips? Searched around the forums, couldnt land anything.

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#142376 - 08/01/18 11:37 PM Re: California Smog Junk [Re: charleslabri]
Beaker Offline
Member L1
*****

Registered: 06/26/15
Posts: 196
Loc: Colorado Front Range, US
Here's a past post on this topic:

Removing California Emissions Equipment? (09/07/09)

Sounds like it's just a fuel tank vapor catcher; no performance benefit to removal.
_________________________
2007 Yamaha XT-225

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#142377 - 08/01/18 11:42 PM Re: California Smog Junk [Re: charleslabri]
digger Offline
Junior Member

Registered: 03/28/18
Posts: 77
Loc: Illinois
weight reduction = performance benefit. Just sayin.

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#142379 - 08/02/18 12:32 AM Re: California Smog Junk [Re: charleslabri]
Beaker Offline
Member L1
*****

Registered: 06/26/15
Posts: 196
Loc: Colorado Front Range, US
That burrito you ate for lunch weighs more than that canister; just say'in.
_________________________
2007 Yamaha XT-225

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#142383 - 08/02/18 12:16 PM Re: California Smog Junk [Re: Beaker]
peejman Offline
Platinum Member
*****

Registered: 06/03/13
Posts: 2844
Loc: East TN USA
Originally Posted By: Beaker
That burrito you ate for lunch weighs more than that canister; just say'in.
laugh


There's a few common mods folks like to make. A little searching will yield plenty of threads...

3 turn mod - remove the plug covering the mixture screw in the bottom of the carb and set it to 3 full turns out from bottom.

Snorkel shortening or complete removal. This typically goes along with replacing the OE air filter with a UNI or K&N type filter that's less restrictive. This also makes more noise.

Z1 mod - modify the stock exhaust to open it up. There's a baffle plate in the exhaust behind the spark arrester. Take the spark arrester out (not so easy sometimes), enlarge the hole in the baffle to increase flow (and noise), and reinstall the spark arrester. Aftermarket exhaust is also available.

Mods beyond the 3 turn also typically require new jetting. When doing both the snorkel and Z1, the typical is a 42.5 pilot jet (40 is stock) and a 130 main jet (125 is stock). The needle generally does not require shims.
_________________________
This shall pass, be still and know.
2006 XT225, UNI filter, ProTaper bars, MSR handguards, SS front brake line, Shinko 241's.

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#142388 - 08/02/18 04:45 PM Re: California Smog Junk [Re: charleslabri]
charleslabri Offline
Junior Member

Registered: 08/01/18
Posts: 9
Loc: San Francisco
right on, this is great information. Im going to bookmark this thread and come back once i get the thing running (guy i got it from left it outside in the tahoe snow for a few years uncovered)

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