Answer
Feb 21, 2022 - 09:28 PM
Hello,
We appreciate your interest and support of our products. No matter which of our specific products you may be using, if the vehicle in question came from the factory with oxygen sensors installed, our products are designed to be used WITH those oxygen sensors. The AFR that is commanded and maintained by the ECM using the oxygen sensor feedback is normally perfectly safe for all modifications performed to the vehicle. With the advances and newer technology being used in these engines, they are generally more efficient than ever, and, don't need any addition fuel in the closed loop area.?
For the modern bikes with closed loop systems we have found in recent testing and analysis that most modern engines now have actually been designed to run at the leaner factory settings. In the closed loop area of the fuel curve we find they generally run better if the factory closed loop system is retained and not changed. That area is generally very low engine load conditions at the low rpm and throttle, so it does not require substantial fuel changes to run optimally like the high rpm, high throttle settings do. Due to this and ever tighter emissions regulations at the state and federal levels we now recommend the factory closed loop O2 sensor components be left connected, and if using our Auto Tune it would only make adjustments outside that area where they are truly needed for the high engine load conditions at higher rpm and throttle settings. Leaving the factory sensors in place and installing the Auto tune for fuel adjustments outside the closed loop area actually gives you the best overall compromise between fuel economy and power and performance when actually needed. You get maximum economy in the low rpm throttle range, and max power and performance in the high rpm, throttle range.
We appreciate your interest and support of our products. No matter which of our specific products you may be using, if the vehicle in question came from the factory with oxygen sensors installed, our products are designed to be used WITH those oxygen sensors. The AFR that is commanded and maintained by the ECM using the oxygen sensor feedback is normally perfectly safe for all modifications performed to the vehicle. With the advances and newer technology being used in these engines, they are generally more efficient than ever, and, don't need any addition fuel in the closed loop area.?
For the modern bikes with closed loop systems we have found in recent testing and analysis that most modern engines now have actually been designed to run at the leaner factory settings. In the closed loop area of the fuel curve we find they generally run better if the factory closed loop system is retained and not changed. That area is generally very low engine load conditions at the low rpm and throttle, so it does not require substantial fuel changes to run optimally like the high rpm, high throttle settings do. Due to this and ever tighter emissions regulations at the state and federal levels we now recommend the factory closed loop O2 sensor components be left connected, and if using our Auto Tune it would only make adjustments outside that area where they are truly needed for the high engine load conditions at higher rpm and throttle settings. Leaving the factory sensors in place and installing the Auto tune for fuel adjustments outside the closed loop area actually gives you the best overall compromise between fuel economy and power and performance when actually needed. You get maximum economy in the low rpm throttle range, and max power and performance in the high rpm, throttle range.
