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Grey Wire Mod

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I was about to do the grey wire mod on my 07 wr and i am trying to find out if i have to change the timming of it the grey wire is enough. i really dont want to open the motor if i dont have to. i just want to know if i will be able to tell a diffrence in not changing the timming.

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what the grey wire does is it retards the timing from 6000 rpm on. there is a noticable difference at the top end. you dont have to adjust the timing. you should rejet after all the free mods though. did all the free mods on my 07wr250 and the bike just rips. also added fmf 4.1 complete with megabomb header, what a difference. just remove grey wire ffrom connector, dont cut.

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okay i just removed the wire but have not really got to try it out. i was just wondering did you do the timming? i have yet to rejet i think that will be next.. i did the ex but nothing else

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