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Discussion Starter · #1 ·
Yamaha MT 09 FZ 09 MT09 FZ09 O2 Controller Fuel Mod | eBay

Need some of you experts to have a look at the above, apparently it modifies the signal from the O2 sensor to tell the ECU the bike is running slightly lean and then it keeps the A/F ratio at about the 13.4:1 optimum, in effect making the bike run a consistent A/F ratio from closed to open loop, reducing the jerky low load running and smoothing the closed to open loop transition , it works in conjunction with the 2015 Yamaha map and the standard O2 sensor, just modifies the signal a bit to trick the ECU, but varies as per standard so the ECU doesn't default to its fail safe mode when it detects a constant signal, would this be a goer, it all seems to make sense if it works.:confused:
 

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Discussion Starter · #3 ·
Cool thanks
 
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