Please help scale a ZR1 map!
Hello everyone,
I am running into issues with a single turbo G8 (E38 pcm). I have the custom operating system for 2.5 bar VE and I'm using the common ZR1 map sensor. The issue is (I believe) my map values need some adjusting. I just noticed Barometric pressure is not reading accurate and boost pressure is displaying at least 3 psi higher than what my boost controller is seeing. I am concerned this will cause the sensor to peg prematurely and its obviously causing issues in the higher boost ranges when BE and PE come in. Can anyone give me some insight or explanation of both the MAP linear and Offset so I'm not chasing my tail trying to make these small adjustments? Attached is a copy of the tune (I am a rookie and it still needs much work) and my most recent log. Thank you for any help!