Those of you with resource: I am in the final stage of testing the system on my Harley, hence I need some assistance locating someone with EFIE building expertise.

Currently I am using an EFIE from Fuel saver, this EFIE (analog) is set with 50mv as the start value when increasing the voltage signal on a Narrow band post cat oxygen sensor. This unit has two ports: one for the negative probe and one for the positive probe to taking your voltage reading from. As I mentioned the initial setting and the lowest value is set at 50mv. I need one with a start setting from "Zero" to 200mv.

During my testing, decreasing the voltage signal will make the V-Twin run too lean and runs hot. AT 450mv bike runs great and stay cool even during this heatwave we are experiencing in MD. I need to fine tune the setting, having an EFIE I can increase the voltage signal (mv) at either 5mv increment at a time or smaller to get me to my final test. Thanks in advance.