Originally Posted by
SteveDigital
I had the same problem, no desired backfiring with vehicle stopped, while working with vehicle moving. Different engine, 2016 3.6L V6 Jeep Wrangler NA, similar backfiring tuning, the following solved it for me:
Under Engine>Spark>Advance>MinimumSpark modify the Torque Reduction table similarly to what you did in the Minimum Spark Base Table. Apparently the ECM considers the Torque Reduction table as soon as the car is stopped. This did the trick for me and I get the desired backfiring while stopped/parked/in N/P .
These are just my thoughts, I hope that above Torque Reduction table *might* help resolve your or somebody else's issue....