Tuning 1227747 VE tables in open loop with a wideband gauge

[mmigacz]

I’ve seen a lot threads about tuning VE tables with BLM data. However, If I have access to a wideband to read AFR, what is the best procedure for tuning VE tables in open loop? This is what I plan on doing, let me know if this makes sense.

-Warm the engine up to operating temperature
-Set Closed Loop - CTS to Enable to the highest value to keep the ECM in open loop
-Set all values in the Open Loop - AFR vs Temp table to 12.5
-Set all values in the Choke - Cold AFR vs. VAC kPa table to 0
-Set all values in PE – AFR table to 12.5
-Vary the rpm and load and record AFR data from the wideband
-Adjust VE tables until the wideband readings are 12.5 throughout the range of RPM’s and loads.

My assumption is the VE tables are dialed in now, right?]
If I’m right I can bring all the values back to their original AFR’s or tweak them if needed.

Note: the only reason I picked 12.5 is it’s a safe AFR. After the VE tables are dialed in I would move the AFR’s closer to 14 when cruising or idling.