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Jetting a xj 550 seca

Discussion in 'XJ Modifications' started by snake89, Jul 22, 2010.

  1. snake89

    snake89 New Member

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    ok dudes & dudetts, im gonna remove the rusted mufflers on my project xj500 cafefighter & replace them with a pair of dunstall mufflers ive got laying around. im gonna run a k&n filter in the airbox. somebody give my a ballpark guess on what main jets to run. maybe 2 sizes up from stock ? just looking for a place to start. thanks for any info. :D
     
    snake89, Jul 22, 2010
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  2. wizard

    wizard Active Member

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    I wouldn't change anything until I see how it runs.
     
    wizard, Jul 22, 2010
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  3. k.joel.porter

    k.joel.porter Member

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    +1. I thought the same thing when I built my pvc plenum with single pod filter and removed my mufflers on my cafe-bob 550. I waited until I saw & felt how it ran and turns out I didn't need to rejet. Still need a rebuild & sync but it's running great.
     
    k.joel.porter, Jul 22, 2010
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  4. snake89

    snake89 New Member

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    thanks guys, i am gonna run it first but didnt know if anyone had gone this route & needed changes. im sure the fuel screw will need turned out another turn or so. im really looking forward to getting this bike on the road. ive owned everything but a inline 4 yamaha. i road a couple back in the day & remember really liking them. this thing is gonna rip up the twistys around here ! :twisted:
     
    snake89, Jul 22, 2010
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