mine only does it with amal on if i run pipe straight from compressor to actuator it runs 18psi but with amal conected it overboost to 28psi and pops was all ok at 24psi then 1day parked car up for few hours got back in and 10psi boost dv split so replaced and ever since overboost with amal connected also boost gauge aint that steady any more even at 18psi with amal bypassed