2010 Challenger R/T 6-speed
Comp 274 cam, JBA long tubes, LMI true CAI
Had the car tuned by a reputable tuner via DiabloSport 2 years ago. Transferred over to HPTuners as I've had this one issue that I was tired of waiting for the tuner to try and resolve (went through 6 revisions with him with no real improvement). Car runs great at WOT and idles great, the only issue I have is that there seems to be some kind of "wall" at 1900 rpms where the car wants to idle drive and rev hang between 1900 and about 2200, but outside of this range the RPMS fall quickly and smoothly. I can watch in the datalog below that as the RPMs are falling around 2k rpms, the spark advance is around 40+ degrees (seems like all of the advance in the PT throttle table at that aircharge), yet when the RPM falls below 1900 rpm the advance falls to single digits which is where I would expect it to be.
Not sure if this is all making sense, but its been frustrating to say the least. I've tried adding/subtracting from both the TB model and small/large desired airflow tables with no real change to this specific issue. I've changed airflow to torque values (cutting them by 15%) with again no real change to this issue.
Anything else I can try before I just set my PT and MBT spark tables to use 5-10 degrees of timing in this area? This almost seems like some kind of glitch in the computer, or more likely me just not understanding what's going on (my setup is far from unique). Tune and log posted. Thanks in advance.