GYT Tuner #s for YZ450f

[Snow Fever]

I ride at 3000' to 6000' anyone have a good starting point suggestion for the GYT Tuner numbers for a snow bike set up. the bike is a 2016 450 FX

 

[Timberview01]

Go to Thumper Talk. Model/make specific forum for the WR/FX has an entire category for FI tuning. Lots of good info and custom maps on there. Helped me out a ton.

 

[jrusher]

On my Fx and my F models
-3 across all fuel
+3 across all timing
have full exhaust, ported head, h/c piston rips good i ride 2000-6500 feet

 

[Snow Fever]

Thanks alot guys, mine is stock (for now) so I will check out Thumper Talk.

 

[jrusher]

you can run that map with a stock bike it works great

 

[kidrman]

How would that map work on a 2015 WR450? Mine starts horribly.

 

[Snow Fever]

Thanks jrusher I will try it. Took the bike out today for the 1st time and had a blast. Not alot of snow, but this is my 1st ride ever on a snow bike so I got some learning. Rode for 1 1/2 hrs and was getting pretty comfortable on it

 

[Honky Tonk]

tried different maps but a Yamaha tech who's done some tuning made me try this (on my stock 2015 YZ450F): -3 all over on fuel (the cold air helps), +2 all over on timing (so advanced timing).. that's what I'm running, just haven't been able to open her up yet this season..
as for your WR, I believe the stock ECU doesn't allow you to change the map, you may have to get an aftermarket ECU (race) to make modifications..

 

[kidrman]

I already have the comp ECU and tuner. I'm much higher on fuel than that right now, I used the hard hitting fmf map. I used a ton of fuel yesterday so I am going to pull a little fuel and leave the timing. Altitude should minimize risk of detonation.