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Old 03-27-2009, 11:57 AM   #760
Silas
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Joined: Jul 2008
Location: Seattle
Oddometer: 5
Tuning my stock 2001 LC4E

Howdy folks,

I've got a 2001 640 LC4E with a Mikuni BST 40 and a Supertrapp exhaust and I want to tap into the tribal knowledge to find the "golden combination" of jetting, exhaust plates, and other tuning tips/tricks/procedures. Please tell me what has woked for you or point me in the right direction...

I'm pretty sure it's running lean because the pipe is blue, so I bought the next size up main jet (stock for the Duke), figuring that would help. I'm open to getting a larger one if it's the right thing to do, but I'm not really trying to build a race bike - just something that will allow me to dominate the couple of miles of pavement between my house and campus. Once in a while I do some highway or logging road trips.

I know this is a pretty basic setup so I've been reading threads for a couple of hours looking for enlightenment, but no real luck yet.

Please, if you can, point me in the right direction or chime in about what has worked well for you.

Happy Trails,

Silas


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