7.6 Boost / VVT 7 ADDITIONAL ITEMS: BEYOND BASIC FUEL AND IGNITION CONTROL
The AMP EFI boost solenoid can be used with either a one or a two port wastegate. This diagram shows how
to plumb it in single solenoid mode. As a rule of thumb, the single solenoid mode can reach boost pressures
approximately double the pressure allowed by the wastegate spring on its own.
Dome pressure plumbing uses a compressed CO2 supply to forcibly pressurize the top portion of the wastegate
actuator to achieve boost levels well above spring pressure. Two three-ported solenoids are required as well as
an additional pressure sensor to monitor the dome pressure. The ’vent’ port on the ’fill’ solenoid must be plugged.
The compressed gas supply is typically CO2 and needs to be regulated to a pressure a little above the maximum
dome pressure required. For testing, compressed air works fine too.
Note that the MS3Pro will not energize the boost solenoid when the engine is in vacuum, to reduce wear on
the solenoid.
AMP EFI MS3Pro manual version 1.202, firmware 1.5.0, 4/21/2017 Page 201
To Next Page
Loading...