Quote:
Originally Posted by Parabellum
^ Good data, but we really need the A/F ratio....hydrocarbon readings could be higher for a number of reasons including a bad cat, old plugs, etc....
I am still VERY skeptical of the notion of bikes coming rich from the factory with today's emission standards.
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AF1 uses 4 Gas EGA not Air/Fuel ratio. The 4 Gas give a truer view on how the engine is running than afr. AFR was good 15 - 20 years ago but technology has changed and more and more shops are now using 4-GAS instead.
It gets WAY above my pay grade, but here's the Eddy Current MFGs wed site. Lots of good stuff on 4 Gas vs. AFR. The guy who tuned my bike doesn't care for the AFR at all. He has taken many bikes tuned using the AFR method, retuned them using 4 GAS and gotten much better results, hp, torque, emissions and gas mileage.
What confirms the richness is the improvement in the mileage of the bikes once tuned. Almost ALL go up a significant amount after tuning.
Factory Pro: Producers of the EC997 Low Inertia Eddy Current Dynamometer Series and Quality MC performance products
wideband o2 sensor vs 4 gas EGA tuning
AF1 Racing - Aprilia Sales, Parts, Service, Racing, and Dyno Tuning - New Braunfels, TX - Call 877.626.3966