Water/Methanol Injection V218
© 2020 AEM Performance Electronics
A MORE LINEAR FLOW OUTPUT
AEM’s Water/Methanol Injection system delivers a linear flow rate as pump speed increases. This is unlike
competitors’ systems that simply have a linear pump speed drive between start and full setting which results in
a non-linear delivery of water/methanol. AEM’s system linearizes the flow, giving you better flow control and a
more progressive delivery of water/methanol.
BOOST-SAFE OUTPUT (optional)
The progressive controller includes a Boost-Safe output (grounded when active) that activates whenever the
system is armed and runs out of fluid or an error code is flashing. The green wire on the controller is the 1.7
amp switched ground. This wire can be hooked up to a solenoid that will vent waste gate pressure when
activated. Apply 12V to the other side of the solenoid (AEM P/N 30-2400 or equivalent). This output can also be
used to trigger a timing retard function in a standalone ECU or a CDI whenever the system runs out of fluid,
thus protecting your engine. It is highly recommended that this feature be utilized.
SOLENOID DRIVER (optional)
The progressive controller includes a Solenoid output (Brown with white strip wire, grounded when active, 1.5A
max) that activates whenever the system is pumping. The wire should be connected to the ground side of a
solenoid, with the other end of the solenoid connected to switched ignition power. The solenoid should be
installed after the pump and before the nozzle. For best results install the solenoid close to the nozzle.
NON-PROGRESSIVE OPERATION (optional)
The progressive controller is capable of operating in a non-progressive manner, acting as a full-on or full-off
type system. To set this up the “Full PSI” knob must be set to a lower value then the “Start PSI” knob. This
means as soon as the boost exceeds the “Start PSI” threshold the pump will begin pumping at its maximum flow
since it has passed both the start and the full requirements.
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