Low Boost Pressure

[Hitman]

I used the correct year replacement MAP sensor. Now for a good update, last week I pulled my 13,000 lb fifth wheel for the first since the sensors were replaced, about 1 1/2 hour trip with one long very steep hill and multiple smaller ones. I had the boost pressure screen pulled up the entire trip, the boost repeatedly went to around 29 PSI on hills with no failure. I can't guarantee the sensor change will correct your problem but it has corrected mine. The sensor change is at least a cheap first step. Good Luck

 

[Trash Panda]

So we got a a 2024 3500 HO that just went on weight watchers ghost diet plan and it will only make 20psi of boost. Are y’all saying to put in a map sensor for a 2018 model? Or a new map for the year of the truck?

ECM swap tune, or the “factory” ECM option that’s been floating around?

 

[OLEJOE]

ECM swap tune, or the “factory” ECM option that’s been floating around?

Inquiring minds got to know.

 

[PrisonerTransports]

Inquiring minds got to know.

Factory ecm option just delete tuned

 

[Trash Panda]

Factory ecm option just delete tuned

Likely to be a part of your problem there.

Some have had good luck with that option, but they can be problematic to say the least.