These are custom maps that I have created. I am not a pro tuner. I am just a normal hillbilly that is playing around. I’ll supply all of the variables that I have at hand and methods that I created the maps. Take them as they are free. Enjoy. Provide Feedback. No warranty. I’m not responsible if it causes any problems.
The main reason for playing with your fuel controller is to achieve the optimum air/fuel ratio (AFR). I found basic information from AFRPlus.com. My goals are to create safe maps that won’t just rip up my engine. While looking at the table below, I chose to select a target AFR between 12.2 and 13.3 (I chose 4 sample points – 12.2, 12.8, 13.0 and 13.3). These seem to be common ranges for different applications. Additionally, the temperature where I live (Texas) varies up to 30 degrees from when I go to work in the morning to when I drive home. When I did more carburetor stuff, we would re-jet when there was a 15 degree difference. So, I decided to do a morning and an evening map to sample varied conditions. The map select switch on the Bazzaz ZFi was helpful switching for morning and evening.
AFR Values & Characteristics in Four Stroke Engines
6.0 AFR – Rich Burn Limit (engine fully warm)
9.0 AFR – Black Smoke / Low Power
11.5 AFR – Best Rich Torque at Wide Open Throttle
12.2 AFR – Safe Best Power at Wide Open Throttle
13.3 AFR – Lean Best Torque
14.6 AFR – Stoichiometric AFR (Stoich)
15.5 AFR – Lean Cruise
16.5 AFR – Usual Best Economy
18.0 AFR – Carbureted Lean Burn Limit
22.0+ AFR – EEC / EFI Lean Burn Limit
I tried to record as much data as available. I used the environmental conditions as represented in the iPhone’s Weather application. I snapped a picture of it prior to each ride/sample run.
My Bazzaz ZFi installation and configuration:
My Wideband Configuration and Bazzaz ZAFM configuration:
The sample procedure and route was consistent for each measurement. I did my sampling while going to and from work and the commute is ~16 miles and takes about 37 minutes. The altitude at the start point and end point are in the high 700ft range. I would say that the route was between 700ft and 800ft along the way. There are up hills and down hills. There are several long stretches that allow the little Z125 Pro to really let loose. I varied my throttle usage the entire time and kept the variable as close to the same as possible.
When the map was completed and applied to my fuel controller, I saved the map. I then took the map and removed some of the values in the 5%, 10% and 20% TPS ranges as they are not useful. Additionally, I looked for anomalies that show up for varied reasons. I utilized the “Data Smoothing” function in the tuner software.
Please find the temperature data. Here is how I recorded it.
Please find the UPDATED .ZIP file below that contains all maps and a PDF that describes each map.
UPDATED – Bazaaz Maps 20160803