When transferring logs from AEM Infinity to AEM Data, the data will always arrive in kpa pressures. I have used the math functions to change for example: Coolant temps displaying as Celsius to Fahrenheit and lambda 1.0 to AFR 14.7. I prefer reading them that way. What i can't seem to figure out is how to convert kpa to PSI pressure. I know that the formula to convert kpa to PSI is: PSI=KPA*.145 But how do i see the negative boost pressures for example in vacuum in idle i should be seeing -10psi but i dont get any negative values using that formula. Anyone pay attention in math class?

 

Figured it out, this is the formula.