I went with a 2 bar map on a COS tune and I am having problems calibrating the map.

Since its a 2 bar map C6301 Map Sensor Scaler should be set to 190 right?

Then C6302 Map Sensor Offset should be set to a number that makes it read proper barometric pressure whit the key on engine off?

I set C6301 to 190 then played with the scaler to make it read proper barometric pressure for where I am. I then hooked up a vacuum pump and gauge to the MAP and pulled vacuum in steps to make sure the MAP would read right through its range and its way off...

Any suggestions?

 

Did you get the new map sensor too? If so what part number did you get

 

My scalar is set to 198 i think so it reads accurately compared to the stock1 bar.

 

I just went to advance auto and got a map for a saturn redline. I forget the part number but it is a 2 bar MAP

 

I tried 200 for the scaler too but no real change ill try 198 tho

 

You need to leave B6302 alone! You set B6310 to 190 for starters, and then adjust it to make the KOEO read the same kpa as you stock 1 bar read with the KOEO...

Do not adjust B6302!

 

Ok. What should B6302 be set to or how can I tell what to set it to?

 

Set it back to the stock setting... you did save the original tune, right? If not, exactly what vehicle is it and I can find the setting for you.