My '85 1200 GW FI ECU replacement/upgrade/modernization project required I install a WBO2 sensor for engine tuning and normal operation. The original system did not have one. I mentioned in one of my posts that an O2 sensor would be good to install to tune carbs. Knowing the AFR for idle and general engine performance through the engine RPM up to WOT may provide good information as to how to "jet" the carbs for your riding profile and area. You would need to use a WBO2 sensor, and not a NBO2 sensor. A NBO2 sensor only indicates a lean/rich AFR condition. A WBO2 sensor provides AFR readings for various engine load conditions.
For idle jets, you would want to achieve an AFR reading close to 14.7 AFR. If you have several sizes available to experiment with you can change the jetting to determine what the engine likes. The same with the main jets and jet needle.
Installation of an O2 sensor could assist in determining if the carbs need to be tuned after an exhaust system change as this is a popular upgrade/change.
Not for everyone, just thinking out loud. Thoughts?
For idle jets, you would want to achieve an AFR reading close to 14.7 AFR. If you have several sizes available to experiment with you can change the jetting to determine what the engine likes. The same with the main jets and jet needle.
Installation of an O2 sensor could assist in determining if the carbs need to be tuned after an exhaust system change as this is a popular upgrade/change.
Not for everyone, just thinking out loud. Thoughts?
