No, but you can convert your 'chemical potential' to 'fugacity'.
Then, to use your own equation of state, simply input your computed 'fugacity coefficient'.
For example:
ExternalPressure 1e5
FugacityCoefficient 1.0
means the pressure is fugacity (because the fugacity coefficient is 1.0 and then pressure is equal to fugacity) and at 1 bar.
With your equation of state you can compute the fugacity coefficient.