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Jetting '06 YZ250F for mods

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Hi guys need some help... I have an 2006 YZ250F jettings all stock and it worked super good for me, no bog or popping. I just got a pipe and I'm hoping someone can give me some JET numbers to start from so I can dial it in better on my own. I looked through all the pages (on the jetting thread in the WR/YZ250F section) and anyone that comes close to what I have has a JD jet kit, so I know that will probably throw me off.

Model (YZ or WR 250F): 2006 YZ250F

Main jet: # 178 (stock)

Pilot Jet: # 42 (stock)

Fuel screw (turns out): 2 1/2 Turns out (stock)

Needle model/Clip position: 3rd groove down from the top (stock)

Leak Jet: # 80 (stock)

Pipe: Dr.D (Just got it)

Altitude where you ride: 200ft above sea level

Temperature where you ride: 25ºC summer

Other mods: Twin Air air filter

Degree of satisfaction: need help setting for up for new pipe.

So I'm just looking for some #'s to start at so I know what to go buy. Thanks, Rob.

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I have had 2 Dr D pipes in the past and the have both worked great with the stock jetting. I would probably change the Leak jet to a 50 and then see what it needs from there with the pipe on.

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Its all ready a race bike, its not like your working from some plugged up muffler to a race pipe so I would not expect a change of any significance

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