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GS450 1989, Another Jet question (pilot air jet)

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    GS450 1989, Another Jet question (pilot air jet)

    Hi Guys,

    I know, I haven't introduced myself, I will upcoming days, no worries.


    I have this Cafe Racer, 1989 GS450e, Eurospec bike with the following specs:

    - Open 145mm velocity stacks (no filters, just a thin screen)
    - standard diameter exhaust, Jeckyll and hyde exhaust valves and almost no flow restriction.
    - 145 Main Jet
    - 55 Pilot Jet
    - Needle in the highest position

    Now my question is:

    The bike has a standard 135 Pilot air jet, Can I improve something by changing this to a bigger size?
    Attached Files
    Last edited by Guest; 03-28-2016, 11:45 AM.
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