External wastegate connection – Turbosmart BOOST CONTROLLERS – ELECTRONIC - e-Boost2 (2005-current) – Complete User Manual User Manual
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Port (1): vents pressure from the solenoid. Connect this hose to the intake side of the turbo, between the air cleaner and the inlet of the
turbocharger. Otherwise connect a short piece of the silicon hose and face the vent downwards to stop water or debris entering the
solenoid.
Port (2): to the internal wastegate actuator
Port (3): to pressure only source
EXTERNAL WASTEGATE CONNECTION
The first method of installation is a one port connection. If the desired boost level is not achieved i.e. boost level is too low, or not
controllable, it is recommended that the wastegate spring be changed to a spring which is closer to the desired boost pressure or to trial
a 2 port connection method.
There are 3 different 2 port connection methods that can be trialled to achieve different results. The 2 port method (1) can be used if
there is high exhaust manifold back pressure forcing the valve open. The 2 port method (2) allows the user to achieve the maximum
boost pressure their turbo system is capable of. If a wide range of boost pressures is desired i.e. 5 – 40 PSI, the 2 port method (3) with
a 4 port solenoid (sold separately – TS-0301-2003) might be needed.
A single solenoid can be used to control twin wastegates in a twin turbo setup but it is recommended that twin solenoids are used in
twin turbo setups to reduce the length of the pressure hoses to aid in control and response of the wastegates.
Single port, single solenoid, single turbo connection Method
(Basic single wastegate setup)
Port 1 of solenoid vent to atmosphere
Port 2 of solenoid to bottom port of wastegate
Port 3 of solenoid to Pressure only source
Pressure only source
to port 3 of solenoid
Port 1 of solenoid
vent to atmosphere
Port 2 of solenoid to
actuator
Wires to E-Boost
External wastegate
Bottom port of
wastegate to port 2
of solenoid
Top port vent to
atmosphere
Turbocharger
Port 1 of solenoid
vent to atmosphere
Pressure only to Port
3 of solenoid