Turbosmart BOOST CONTROLLERS – ELECTRONIC - e-Boost STREET 40psi – Complete Manual User Manual
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Single port, twin solenoid, twin turbo connection Method
(For V configuration twin parallel turbocharger engines E.g. V6, V8 etc)
Port 1 of solenoid vent to atmosphere
Port 2 of solenoid to bottom port of wastegate
Port 3 of solenoid to Pressure only source
Join the wires from both solenoids together (polarity not important) and then connect them to the brown and grey wires of the 
wiring loom 
Two port, single solenoid, single turbo connection Method (1)
(For controlling boost on a single turbo, single wastegate, single solenoid turbo system with high back pressure)
*NOTE: An increase in your minimum boost pressure is expected when using any of the 2 port connection methods. Ensure all boost 
set point values and gate pressure values are set to Zero and measure the new minimum boost pressure achieved by this method 
before increasing your Boost Set Point values. 
Connect the bottom port of the wastegate and Port 1 of the solenoid to a Pressure only source via a tee piece
Port 2 of the solenoid to the top port of the wastegate
Port 3 of solenoid vent to atmosphere
Wastegate
Port 2 of solenoid to top 
port of wastegate 
Solenoid
Port 1 of solenoid to pressure 
only source 
Tee Piece
Port 3 of solenoid vent 
To atmosphere 
Bottom port of wastegate 
To pressure only source 
Pressure only source
Turbocharger
Top port vent to
atmosphere
Port 1 of solenoid
vent to atmosphere
Pressure only to Port
3 of solenoid
Port 2 of solenoid to 
bottom port of wastegate 
Join wires
