I had tune dialed, but recently swapped the 6 speed to a manual valvebody 4l80e with a custom 4000 stall converter from Jake's Performance. I was expecting the converter to not affect idle much due to its relatively high stall speed, but it is surprisingly nice and tight down low. The only issue I am having now is getting a solid idle. Because this trans has no electronics, I am continuing to use the manual trans tune, and am unable to access airflow adder tables for P/N and when in gear. I went back to the drawing board and followed Big Mike's idle tuning guide to a T. I found optimal base running airflow in park. This trans has line pressure set at 185psi at all times, so it really likes to slam into reverse and in gear. I could help decrease this issue if i could get it to idle at a lower rpm. Also, it needs significantly more airflow to keep it running in gear. I have already added nearly 30% base running airflow, yet it still hunts for idle badly in gear. Idle is VERY stable right after startup though. In the current tune I am running, the idle is very floaty in P/N, yet doesn't seem like it has enough running airflow in gear. I feel lost and like I am chasing my tail, if anyone can look over my tune and log and give suggestions on what direction to head or what tables i should focus on, it would be greatly appreciated. Also, if anyone is familiar with any threads discussing how to get a solid idle in P/N and in gear with a manual trans file, please send it my way.
Vehicle: 2011 Camaro SS
Cam Specs at .050":
235/248 .649/.615 111 LSA 109.5 ICL
Advertised Duration (.006"):
292/301
4l80e VVE only 4 more spark less agressive idle spark.hpl4l80e VVE only 4 more spark less agressive idle spark.hpt
Side question: I no longer have a VSS, but the wheel speed sensors pick up vehicle speed for my speedo. Does anyone know if all of the tables in the tune based on VSS are affected? I do know that cruise control no longer functions unfortunately...