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2006 DRZ400S jetting

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I have a 2006 DRZ400S and have made some mods:3x3 air box mod,removed exaust and cut apart at first joint and removed baffle in the small cone section then welded exaust back together, used a bi-metal hole saw and cut out center of spark arrester. I ride at an average altitude from 2500 feet to about 5500 feet.I am still running factory jets. I also removed the plug on the bottom of carb to access the fuel/air mixture screw. what jetting options should i use? 150 main? 27.5 pilot? JD kit with needle on 4th clip? please help.

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This worked fine but now I will have a brand new Yoshi rs2 SS full system within a few days.Do I need to change the jetting or will this setup work OK?

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I think I have one so it will go in as soon as the exhaust gets here.The first harescramble is in a few weeks so I hope to get her going good by then.

Thanks a lot Eddie.

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