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Old 09-28-2013, 07:55 PM   #500
roger 04 rt
Beastly Adventurer
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Joined: Nov 2011
Location: Massachusetts
Oddometer: 2,296
The above AFR plots look suspect. There's no way that the stock bike is that lean at 3000 RPM. And you'd really like to know the torque down to 2K RPM with some accuracy. It looks as if the stock bike is better there but I think that's an anomaly due to measurement technique.

The kind of thing I'd like to know is this. You're on the road, in 4th gear, 2500 RPM. You open the throttle 1/3 to 1/2, what is the rate of acceleration before and after? Or, what is the lowest RPM you can run in 6th gear that won't buck when you open the throttle. Or, at what low RPM does the torque start to fall off at. Each of these things can be measured pretty easily with a GS-911 or even observed by riding. A simple richening of lambda at the O2 sensor improves them all.
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