Wartsila’s User Group › Forums › 50 SG Engine › MFI trips – troubleshooting root cause › Reply To: MFI trips – troubleshooting root cause September 11, 2019 at 4:50 pm #2136 AnonymousInactive We elected to just run open tubing to the floor. 3/4″ Swagelok. Does not affect charge air reference. 18.9 is an ambitious number. Take a look at how fast of a ramp rate they left you with.