Hello everyone. Ive posted this on a few other forums and havent had much luck so figured id share this here as well for any advice.
I have a 2013 f150 with 63500 miles. I have a s&b drop in filter and a full race resonated exhaust.
A few weeks ago I got the recall notice for the transmission downshift to 1st gear. Ive never experienced the sudden downshift but decided to get the recall flash done. After getting the truck back something doesnt seem right. The truck feels very sluggish now. What sticks out most to me is the boost. I monitor parameters with an edge insight cts2. Prior to the flash i could easily build/hold up to 12 pounds of boost. Now after the flash the boost seems to be limited to 7 pounds under the same driving conditions. Only way i see the 12 pounds is if i run wide open throttle. But for normal driving and pulling grades, the boost will only climb to 7 pounds and will not increase, making the truck need to downshift where as it never needed to before.
I fully understand these vehicles are torque based and boost is never consistent, but clearly something is not right in this case. Also i have well over 1000 miles after the flash so i dont believe it is just the truck "learning."
Things i have done so far to try and find a fix include: new plugs, new map sensors, new ebov, new wastegate solenoid, new wastegate actuators set to correct specs, a different throttle body, boost leak tested with no leaks, pressurized all vacuum lines and found no leaks. Also intercooler is dry with no condensation. All this with no improvement leaves me to believe something happened during the flash and the problem lies within the pcm limiting something.
If anyone has any advice on what to check or look for please let me know. I will add that i do have a custom tune for the truck, but boost was limited to 7 pounds on it as well, and datalogging revealed no issues. Sorry for such a long post. Thank you!