Thanks for taking a look guys. I've got a 2003 vette running COS3 with a 2 bar map sensor properly scaled. This exact tune was reading boost before I upgraded to a newer version of software. Granted it was a few months ago that the car was tuned but now for no reason I can't read boost. File attached if you need to see it.

I've resorted to throwing various other tunes into spare ecms I have and powering them up in my personal vehicle. They are all doing the same thing. I've also changed out the MAP Sensor for another 2 bar and I get the same results. I changed the scaling on the map sensor ( C6301 ) back to a 1 bar scaler number and I can watch the car with Key On Engine Off read around 48 and as I increase boost toward 15 lbs I can see it go up towards 90. That tells me there is nothing wrong with the sensor or wiring. To me that only leaves the software.

I'm desperate for any and all suggestions.

Thanks for your time.

Randy

Read Stroker Tune_0000.ctz