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My air to fuel ratio runs about 14.0 on my 09 dx with super tuner 2 into 1 indy exhaust is the bike tuned properly an is that a good number to have it at I don't trust the stealerships word
 

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Your bike will have different AFR targets at all different MAP/Throttle and RPM ranges, in closed loop or in open loop, and will all be based on whether or not the volumentric efficiencies for all RPM/Throttle ranges have been set correctly on the dyno.

In other words, your bike is not going to have one overall AFR ratio. It's going to vary based on what the engine is doing at a particular point in time.

If you're talking closed loop operation, cruising, constant speed/throttle, then 14.0 is low/too rich. Under temporary, moderate to heavy acceleration, 14.0 is good.
 

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low 14`2 at low load cruising is good... full throttle requires something in the low 13`s or high 12`s.. the higher the engine load (higher map) the richer the required mixture..
 
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