Question about 2006 Harley Davidson FXDBI Street Bob
You are correct … partially. The ECM monitors the O2 sensors to keep the fuel/air ratio at around 14.7:1. This happens only at cruising speeds or light engine loads above idle. At wide-open throttle, the sensors are not being monitored. When you change the intake or exhaust tracts, you need to change the fuel mapping at wide-open throttle and possibly at idle. In between, the O2 sensors will keep the fuel/air ratio at the 14.7 range. This may or may not be the best for your engine package and riding requirements. Power Commander has what you need to make it right. You can use the O2 sensor eliminators and adjust the fuel/air throughout the rpm range or just tweak the top end at wide-open throttle.
Posted on Nov 20, 2008
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Posted on Jan 02, 2017
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