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wr250r 09, help wanted fmf exhaust mods

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hi guy's

this thread is for my mate he has an 09 wr250r yamaha he is going to fit an fmf q4 scilencer on the bike and wants to know if the pipe has a boss for the lambda sensor to go back in, or do you do away with the sensor, and if so how do you go about that, any help would be very much appriciated

thanks in advance

steven.:thumbsup:

Edited by stevenf67

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no bung in the fmf you will probably have to install one in the fmf

thank you for the info i will pass it on, can you remove the sensor and link it out at all or do you have to get it remapped

thanks stevie

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US spec WR250R doesn't have an O2 sensor, even the CA version. A variety of firms offer weld on bungs for O2 sensor. Not sure, but I think the WR250R forum has a post on auto-tune and a PC-V. Look over there.

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US spec WR250R doesn't have an O2 sensor, even the CA version. A variety of firms offer weld on bungs for O2 sensor. Not sure, but I think the WR250R forum has a post on auto-tune and a PC-V. Look over there.

thank you will do

stevie:thumbsup:

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