Posts
2408
Joined
11/2/2011
Location
Chapin, SC
US
I have to gripe a little bit here. I dropped $400-ish on an FMF 4.1 slip on for my '17 YZ 250F, and honestly I'm not impressed with the performance change. I haven't remapped the bike, so I wanted to check with FMF to see if maybe they have some recommended settings to go with that muffler.
The guy I talked to on the phone told me to "disconnect my battery overnight, then plug it back in the next day and the mapping will reset to stock." Yeah, no, not on a YZ 250F. Then I asked him to check with someone else, and when he came back he referred me to Dynojet (?!?) to get mapping settings? I called, was on hold, and honestly it makes no sense to me anyway why I would have to call a third part for settings for an FMF product so I hung up. My bike is all stock except for this muffler.
What I wanted from the FMF was to trade a little of the low end for more mid-top. I keep hearing reference to all of these maps on the Yamaha website but I can't seem to find anything. Can someone out there help get me going in the right direction? This is my first mappable bike.
The guy I talked to on the phone told me to "disconnect my battery overnight, then plug it back in the next day and the mapping will reset to stock." Yeah, no, not on a YZ 250F. Then I asked him to check with someone else, and when he came back he referred me to Dynojet (?!?) to get mapping settings? I called, was on hold, and honestly it makes no sense to me anyway why I would have to call a third part for settings for an FMF product so I hung up. My bike is all stock except for this muffler.
What I wanted from the FMF was to trade a little of the low end for more mid-top. I keep hearing reference to all of these maps on the Yamaha website but I can't seem to find anything. Can someone out there help get me going in the right direction? This is my first mappable bike.
https://www.shopyamaha.com/docs/default-source/gytr-power-tuner-setting…
The Shop
Doing a full exhaust plus a tune for it would be the best option to see more power.
my yz450f came with a full fmf exhaust but i have the bike tuned on a linear map. Bikes already fast enough stock.
https://tokyomods.com/ecu-form/
Post a reply to: FMF support on mapping... wow that was useless.