the car at 10 is the car at 10. He must have a 3 bar map sensor, so when the car is at 10 it has a map for 10 psi. When it makes it up to 26 it will be in the map that is set for 26 psi aka 1.79 bar. Im not sure what to make of it. Sounds like he has the check book and the engine builder just makes it. My FAST is set for 35 psi and 9000. If I put the pulley on for 20 pounds im set, if I put on the 32's im still set and I think he is too.