MattR
Well-Known Member
If you left the fuel alone, what did you do to get the gains? Did you change ignition maps? Have you got a graph you can post?
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Curious. Chris told me to unplug mine. It may be different advice for postal remaps though, as the map isn't custom tweaked.Lambdas have been disabled but left connected to prevent fault codes.
Yes, I have the map and will try to post.If you left the fuel alone, what did you do to get the gains? Did you change ignition maps? Have you got a graph you can post?
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If you have a 2017 bike with an Arrow full system you can post your ECU to CJS and he will flash it with the map he developed on my bike on the Dyno.
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Yamaha has to pass emissions requirements worldwide, they map the ECU first and foremost for this requirement, not for optimal performance.I hear you on this point BUT....isnt flashing your ECU essentially disagreeing with Yamaha R&D? If Yamaha knows best then why flash or modify?
He sold me a map for a customer's stock Gen II that worked great on my 2015. Sent it to a local shop he knows in Japan and they uploaded it for me. Works great, both stock and with a full aftermarket exhaust.If you have a 2017 bike with an Arrow full system you can post your ECU to CJS and he will flash it with the map he developed on my bike on the Dyno.
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Agreed. I kept the sensors functioning.I dont get the whole disconnecting the "Lambdas" thing, they are what tells the ecu how well it is fueling, right? If you remapped the fuel and ignition curves the lambdas should keep the fuel to that new map, without them how does the bike adjust for changing altitudes and temperatures. Every automotive fuel injection system I know of uses O2 sensors to check it self after the combustion process, are bikes that much different?
AFAIK the 02 sensors give feedback to help keep the fueling in an epa-friendly range.I dont get the whole disconnecting the "Lambdas" thing, they are what tells the ecu how well it is fueling, right? If you remapped the fuel and ignition curves the lambdas should keep the fuel to that new map, without them how does the bike adjust for changing altitudes and temperatures. Every automotive fuel injection system I know of uses O2 sensors to check it self after the combustion process, are bikes that much different?