k, i've been reading up on tuning and I have one question atm. My greddy profec b2 boost controller and my boost gauge are working together and read the same. The problem is that my fc commander is reading differently, its reading a little behind the boost controller. for example at .15 bar on the controller i'm at about .07 bar on the fc commander. now my question is will this cause any problems when i tune my car??

 

It's been known for years that the PFC Commander has an error that displays the boost wrong (and too low). The PFC is still seeing the correct boost levels for use in the fuel/timing maps, it's just not displaying it right.

 

See the previous answer. Then you go calibrate your accurate boost gauge to the PFC absolute pressure values. Then with this you can change your P row ABS values to the boost levels you plan to run with your own desired variation between rows. I have my P rows increase by exactly 2 psi from P16 to P20.
Some people use a 1psi variance for there main boost rows.

You need to be really in the PFC forum!!!!!!

 

k, thx

will do that.