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Honda varadero xl 125 2004 air filter bunge

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Borninsin
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Joined: 10 Jul 2023
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PostPosted: 14:44 - 10 Jul 2023    Post subject: Honda varadero xl 125 2004 air filter bunge Reply with quote
Hi. Just bought me an 2004 Varadero 125 and heard that you can remove a restrictor bunge in the air filter. Someone who can explain and send me a picture where it is in the filter box?

And if I remove it, what can I expect?

Sorry for my bad English

Greetings from Norway
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xX-Alex-Xx
World Chat Champion



Joined: 12 Sep 2019
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PostPosted: 15:19 - 10 Jul 2023    Post subject: Reply with quote
From this thread: https://www.bikechatforums.com/viewtopic.php?p=3065537

Taught2BCautious wrote:
The Varadero 125 is 'Restricted' in at least 5 ways:

1. There is a rubber bung in the airbox to restrict the flow of air.
2. The air filter itself is too small - but can be DIY replaced with a larger K&N.
3. Carb models are jetted differently for the front and rear cylinder - Fuel Injection models have different pulse widths for the front and rear injector.
4. The exhaust downpipes have restricter sections fitted internally to reduce the exhaust flow.
5. Fuel Injection models have a catalytic converter that further restricts airflow.

1 & 2 can easily be sorted without taking the bike too far over the bhp limit for learner riders - if all 5 items are sorted, you will possibly get between 22 and 25 bhp. anything more than that would require some serious machining of the cylinder heads, new valves, camshaft, etc.


It appears you will need to remove the exhaust restrictor as well....

BTW your English is better than 90% of the people on here, so don't worry Wink
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