OP
OP
NDanecker
Senior Member
Thought I'd give an update.
PCM was swapped but didn't fix the issue. We then replaced the TIPM module and it appears to have fixed the NO BUS issue. However, the P2173 code still existed and put the truck into limp mode (dangerous on the highway).
Out of shear frustration I ordered a tuning class from The Tuning School. Spent the last 3 weeks reading, breathing, eating and sh*tting nothing but tuning. Spent HOURS reading all I can on tuning theory, etc on HP Tuners forum board, which by the way houses some extremely good tuners (and some weekend warriors so be careful who you listen to). I then took this project on.
End result - I fixed the P2173 error. Largest change was to enable Sensed Map instead of allowing the PCM to assume what the manifold pressure should be instead of what it actually is. This required a complete revamp of the VE tables, and other torque management stuff. Also found a number of other settings that were off / not right from displacement, VVT cam angles, spark, etc. All of these have multiple tables for PT, WOT, PT with VVT, Start Up tables, blah blah blah. Most of these were not adjusted correctly which caused a huge swing in timing. In addition, some of the tables were never resized for boost so things stopped at 1KPa or 1g aircharge (which is fine for a NA car but not for FI). An updated 2 bar map was installed but many tables were not resized to use it. Also got some of the idle surge in P/N and especially while in drive handled, and the truck is now running extremely well around 776 rpms (nice low idle). This was frustrating because the tuner had the idle up high around 850 to cover up some of the stumbling issues because of a poorly done tune, and with a stock torque converter it was 'driving' the truck while in parking lots or slow maneuvers.
So I'm not trashing the tuner. I think he does very well the stuff he does every day (chargers & challengers) as they are very common. The 2019 Ram uses the newer GPEC2A OS so its somewhat different and has lots of torque management tables and drive modes that are not used in the 2wd variants. It also takes a HUGE amount of time to get things dialed in with seat time driving the truck, and when your main goal is to make money (and not have to rebuild motors because of a manufacture's faulty part) you can spend the time to find tune it and then use what you did on this truck on the next project.
Almost done with drivability & part throttle tuning. Next is to work on WOT and spark tables, and then finally to the dyno to hone in the spark and VVT cam settings, and see what this beast can do. Currently though it is running way above my expectations. Trade with a TRX???? NEVER!!!!!!!!!!!!!!!!
PCM was swapped but didn't fix the issue. We then replaced the TIPM module and it appears to have fixed the NO BUS issue. However, the P2173 code still existed and put the truck into limp mode (dangerous on the highway).
Out of shear frustration I ordered a tuning class from The Tuning School. Spent the last 3 weeks reading, breathing, eating and sh*tting nothing but tuning. Spent HOURS reading all I can on tuning theory, etc on HP Tuners forum board, which by the way houses some extremely good tuners (and some weekend warriors so be careful who you listen to). I then took this project on.
End result - I fixed the P2173 error. Largest change was to enable Sensed Map instead of allowing the PCM to assume what the manifold pressure should be instead of what it actually is. This required a complete revamp of the VE tables, and other torque management stuff. Also found a number of other settings that were off / not right from displacement, VVT cam angles, spark, etc. All of these have multiple tables for PT, WOT, PT with VVT, Start Up tables, blah blah blah. Most of these were not adjusted correctly which caused a huge swing in timing. In addition, some of the tables were never resized for boost so things stopped at 1KPa or 1g aircharge (which is fine for a NA car but not for FI). An updated 2 bar map was installed but many tables were not resized to use it. Also got some of the idle surge in P/N and especially while in drive handled, and the truck is now running extremely well around 776 rpms (nice low idle). This was frustrating because the tuner had the idle up high around 850 to cover up some of the stumbling issues because of a poorly done tune, and with a stock torque converter it was 'driving' the truck while in parking lots or slow maneuvers.
So I'm not trashing the tuner. I think he does very well the stuff he does every day (chargers & challengers) as they are very common. The 2019 Ram uses the newer GPEC2A OS so its somewhat different and has lots of torque management tables and drive modes that are not used in the 2wd variants. It also takes a HUGE amount of time to get things dialed in with seat time driving the truck, and when your main goal is to make money (and not have to rebuild motors because of a manufacture's faulty part) you can spend the time to find tune it and then use what you did on this truck on the next project.
Almost done with drivability & part throttle tuning. Next is to work on WOT and spark tables, and then finally to the dyno to hone in the spark and VVT cam settings, and see what this beast can do. Currently though it is running way above my expectations. Trade with a TRX???? NEVER!!!!!!!!!!!!!!!!
