There are some really crappy restrictive pod filters out there, particularly the ones that resemble K&N with the cotton cloth between 2 pieces of metal screen. If you get a real K&N it'll work and be effective but I recommend a foam Unifilter.

Like others have said, you're going to have to re-jet to get it to run properly.

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Q (Quantum Mechanic)

1968 CT90/140
2007 Lifan 200
2005 Zongshen 200
1981 Honda GL500 Interstate