So I have COS3 loaded in with efilive and a 2 bar map. Its a SD tune and I just finished the build. Its a twin turbo 5.3l Silverado.

Using the Efilive scan tool monitoring the MAP sensor when cranking and when it fires it is reading 115kpa-120kpa. and never goes below 105kpa. I have the MAP scaled to 190 in the tune.

The truck will only run for about 2-8 seconds then stall out. I think it has something to do with this.

Any ideas?

Thanks

 

Did you scale the MAP appropriately compared to the 1 bar or did you just put in the set value of 190?

My scalar had to be set to 198 to read the same as the factory 1 bar.

 

What does the sensor read Key On Engine Off?

 

Key on engine off it reads about 105kpa.

No I didn't scale the MAP compared to the 1 bar. How do you do that. I hope I still have the stock one...

 

What do you have the offset set to?

 

It was set at 10