The main issue is balancing the reliability, exhaust drone, and emission hardware concerns on the L5P, and it sounds like updated tune files helped resolve many of the early ECM worries. From my experience, keeping an eye on tune revisions and choosing an exhaust setup that controls drone makes a huge difference for a daily-driven truck, and Brozat4’s long-term feedback has been really helpful. If you're already going that route, a full delete kit for L5P Duramax should be planned carefully with a quality tuner and proper monitoring so you avoid headaches and keep the truck running smoothly.
Hi. I've got a 26 RST. I've had the no audio a couple of times also. It's not related to Apple car play. I've got android. It kinda seems to me you have to turn off the truck and get out to possibly get the remote away from the truck. I came back after a couple of minutes and it was good. I know it shouldn't be that way and is aggravating. I've had mine since March. There was no problem with my 2020.
Mark
New truck has yet to be revealed. AI renderings and camo spy shots only help so much to figure it out.
RCSB appears to be coming back again but can't 100% say for sure yet. Ford is the only other OEM that makes an RCSB.
What are you using to log the truck? Have you look into getting HP Tuners MPVI4? These ECU's have a ignition timing map and modifier specifically for ethanol content. The ECM (E92) uses cylinder airmass (load) x RPM to add ignition timing based on ethanol content percentage which is multiplier map 0.00-4.00 to control where it adds timing and how much it adds based on those variables. I have been doing a ton of R&D for my calibration company on the LT DI engines and these ECMs specifically. Getting fuel trims dialed in closer for the VVE and MAF calibration tables helps quite a bit in the response and drivability. There is quite a bit left on the table for sure. The pictures are screenshots of an example of 2 of the ignition timing maps. It is much more complex than these two maps but this post would be a couple miles long explaining the whole ignition timing logic and other systems that play a role into this. The first map think of it as the base timing map. The second picture E85 Adder map gets added to the base, but scaled by a multiplier based on Ethanol % before being added.
It wouldn't hurt to get the module re-flashed. Usually only needed when module is replaced. There is a specific procedure to learn the steering angle to the module, that may be off now that the alignment is different. Usually only see it after replacing with rack, or module replacement and they throw DTCs when not learned.
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