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01-19-2011, 09:11 PM
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Junior Member
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Join Date: Nov 2010
Location: Fenwick Ont
Posts: 11
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tuning
if i was to put a motoworks slip on, k&n air filter and remove the air box lid would i have to get a tuner? or does the pink wire mod work to tune it ?
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01-19-2011, 09:19 PM
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Moderator
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Join Date: Dec 2009
Location: Tampa FL
Posts: 749
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Pink wire will suffice
Please search prior to posting
__________________
My son is a proven ATV MX champion rider
2009 Can-AM DS 450 XMX, Fox evol 2 fronts and fox rear, Custom motor by Williams ATV performance, motoworks exhaust , BCS intake..
2008 DS 450 Frame: removed all Rivets, modified front frame pieces,BCS frame support kit, replaced all bolts with metric fasteners,ENGINE: Custom Engine build by Williams ATV Performance, BCS intake,SR4G2,x factor nerfs and heels, PEP custom front and rear,Holz A-arms BRP race pkg
more every week 
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02-27-2011, 09:13 AM
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Junior Member
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Join Date: Nov 2010
Posts: 19
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I know the difference between the pink wire and the motoworks fmi but I always thought that If you do have the fmi like I do the pink wire CAN NOT BE CUT IS THIS RIGHT I just picked up my quad from the shop and for some reason they cut my pink wire I do not know why ?
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02-27-2011, 10:13 AM
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Senior Member
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Join Date: Dec 2009
Posts: 1,334
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with the motoworks FMI you have to have the pink wire NOT CUT...there are other FMIs out there that are different. it should be in the instructions for each manufacturer.
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02-27-2011, 11:45 AM
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Super Moderator
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Join Date: Feb 2009
Location: so cal
Posts: 4,543
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And once again please use the search feature prior to posting
This has been discussed numerous times
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all parts for sale!
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02-27-2011, 11:54 AM
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Join Date: Feb 2010
Location: wisconsin
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I just got my MW fmi a few weeks ago and called them twice talked to 2 dif. people and they both said it doesnt matter cut or not
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02-27-2011, 12:05 PM
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Super Moderator
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Join Date: Feb 2009
Location: so cal
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thats just dumb. it totally matters. leave it connected. the fmi units are piggybacks, they do not interfere with the ecu. if the pink wire is cut, then the ecu is sending out a different map. the fmi tuners are piggybacks off of the STOCK ecu map, if you change the stock settings, the piggyback would not work correctly....
any jedi master mechanics wanna correct me here? am i on the right track?
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all parts for sale!
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02-27-2011, 03:59 PM
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Junior Member
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Join Date: Nov 2010
Posts: 19
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thanks for the info everyone it's greatly appreciated.
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02-27-2011, 04:49 PM
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Senior Member
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Join Date: Jul 2010
Location: Kansas City
Posts: 127
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ECU has two maps.
Uncut wire = stock settings
Cut wire = more fuel
Like hcomras said, the fmi unit is a piggy back. You will add or take away fuel with the fmi unit.
If the wire is NOT CUT, then you will add more fuel with the fmi controller to bring the bike up to tuned.
If the wire IS CUT, then you will add less fuel with the controller.
The fmi controller is just a tool to add or take away fuel!
To tune it properly, you should do a dyno session and according to the o2 reading, you will add or take away fuel with the controller.
Does that make sense?
DuneDevil
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02-27-2011, 04:54 PM
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Senior Member
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Join Date: Jul 2010
Location: Kansas City
Posts: 127
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Hey hcomras,
If that last post makes sense, can you copy it and make a sticky at the top of Dyno/Tuning Room and Engine/EFI/Drivetrain threads.
It might help someone.
DuneDevil
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