Injection System Installation Guide
Congratulations for purchasing the finest water injection system available
the Element Hydramist.
The Element Hydramist was developed from the beginning to be the ultimate
water/methanol injection with uncompromised performance, control, and
safety. The Hydramist is a fully integrated water/methanol injection
solution controlled via the Hydra EMS. This system allows full 3D mapping
of water flow based on load and rpm, automatic map switching, and
unparalleled protection never seen before in any water/methanol injection
Element Hydramist can be installed with basic hand tools and requires only
basic mechanical skills. The installation however takes about 8
hours to complete so prepare your time accordingly. Take time to
perform the installation with extreme care as you are dealing with
electronics, wiring, and electricity. This is meant to be a "guide"
and not a step by step manual. If at any point you are intimidated
seek the help of a professional.
you begin check your parts list:
Element Hydramist Kits
- 150W Hydramist Pump with 125psi
- 22cc Surge Arrestor Assembly
- HSV (High Speed Water Injection
- Hydramist Waterflow Guage Kit
- Water Level Sensor
- Water Jets, 0.8mm, 0.9mm and 1mm
- Water Tank Adaptor
- Hydramist Wiring Harness
- M8 Tap (For water jet)
- 5M of 6mm High Pressure
- 2M of 4mm High Pressure
- Stainless 100 Micron Filter
- 40A Pump Relay
- Hydramist Wiring Diagram
Required Installation Tools
Assorted Metric Open Ended Wrenches
- Wire Stripper
- Razor Blade
Drill and Drill Bits
- 17/64 drill bit for M8 tap (M8 tap
- Screw Drivers
Required Parts Not Supplied:
- 16 ft 8 Gauge Wire (Recommendation: Car Stereo Amp Wiring Kit)
40 Amp Fuse
- 4 Bolts and 4 nuts
Step One: Mounting
Accumulator to Hydramist Pump
the 22cc Hydramist Accumulator show below. Assembly parts as shown.
Screw the 22cc
Accumulator assembly into the outlet of the Hydramist Pump.
Accumulator "L" bracket and screw clamp. Mount securely to
Hydramist Pump as shown.
careful attention to the direction of flow. Screw Accumulator
assembly to outlet.
Step Two: Pump
First begin by deciding where to mount your Hydramist pump. Take
care is selecting a location that is easy to access and has clearance to
drill four holes to mount the pump.
For our application in a
race car we decided the spare tire well would be an ideal location due
to the pump's weight and the clearance underneath the spare tire well
for drilling 4 mounting holes. This location is also ideal as it
mounts the Hydramist pump below the water tank level in the STI.
For street applications we recommend mounting your Hydramist pump to
the passenger side fender well. Mount as low as possible but
again this is a good location as there is clear area in the fender
well behind the suspension strut.
- Do not mount your
Hydramist Pump in the engine bay! This pump has a thermal cut
out above 80C! Extreme temperatures may damage the pump!
- Do not mount
your Hydramist Pump more than 6ft away from your water supply!
- Take care to
inspect underneath the mounting location to prevent drilling into
electronics, fuel, brakes lines, etc!
- Mount the
Hydramist Pump's inlet lower than the outlet when mounting pump
vertically or horizontally!
- Be sure to leave
room for your power and ground wires!
- Be sure to leave
room for the water/methanol lines to be installed without kinks!
Step Three: Wiring the
Pump and Water Line
install your Hydramist pump's power supply directly to the car's
battery to provide sufficient current and voltage to the pump.
You can purchase 8 gauge or thicker wire and relay or it's just as
economical but easier to purchase a car stereo amplifier wiring kit.
If your car is already wired for an amplifier you may just a junction
box to feed power to your Hydramist pump.
8 gauge power cable from your car's engine bay (do
not connect to car battery until entire installation is completed)
through the firewall and run to the vehicle's trunk. The
location we used is an existing grommet against the driver's side
firewall adjacent to the brake fluid reservoir. Take special car
to route the power cable clear of your pedal assembly! Secure
power cable with zip ties to prevent the power cable from
interference. This is also a good time to run the 6 mm high
pressure Hydramist hose from the engine bay to the Hydramist pump
through the same grommet.
power cable and 6 mm water line to the Hydramist pump. Install
the fuse holder in line before the Hydramist pump.
power cable and the Hydramist 6 mm water line along
door sill. Picture shows drivers side but the passenger side may
be a better location as it will allow you to mount other electronics
where your Hydra EMS resides. Secure both with zip ties.
this point on you may reduce your power wire to 16 gauge to supply your
relay. A 16 gauge wire spade is supplied which you crimp on to your
power cable and inserted into the 40 Amp Relay Harness. Find a
suitable mounting location for the Hydramist 40 Amp Relay and mount.
Plug your 40 Amp wire harness into your relay, install the fuse and plug
into the power wire (red) connector on the Hydramist pump. Crimp a
ring terminal to your Hydramist pump's black ground wire and ground to
car's chassis. We used the pump mounting bolt to ground the pump to.
the 6 mm high pressure hose to the outlet of your Hydramist pump
until it locks. On the STI the OEM intercooler water sprayer tank is
ideal to feed your Hydramist pump. Simply disconnect the OEM rubber
water sprayer hose at a coupler and insert your Hydramist 6 mm inlet
hose about 3/4 of an inch into the rubber hose. This feed line is
not under pressure so this connection will be more than secure enough.
Press the 6 mm inlet hose into your Hydramist pump's inlet until it locks.
install a water level sensor for the Hydramist to function properly.
When installation is completed plug the connector into the Hydramist
40 Amp relay assembly.
22 mm hole into your water tank as low as you can go, insert the water
level sensor and rubber gasket. Tighten the nut until a leak
free seal is made.
everything is laid out to your liking drill the 4 holes to mount your
Hydramist pump. Take extra care when drilling through the sheet
metal to prevent drilling into items such as the fuel tank, brake lines,
fuel lines, etc. Insert bolts and secure with nylon locking nuts
(not supplied). Only tighten the bolts enough to secure the pump to
prevent crushing the rubber mounting grommets as these isolate the chassis
from pump noise.
own a WRX and not an STI you will need to purchase a water tank to mount
in your trunk. You can purchase the STI tank, the Spec C tank, or
you can use a 1 gallon fuel cell from a JR. Dragster. The fuel cell
works very well for racers as it comes with fuel cell foam to prevent
sloshing. If you want to use your OEM windshield washer tank you may
do so but make sure you do not mount your Hydramist pump in the engine
bay. You can mount it in your fender well or bumper cover area.
Step Four: Mounting
the water Jets
Drill 2 17/64 holes into
the intercooler next to the throttle body outlet. Tap both holes
with the M8 tap supplied in the kit. Since the Hydramist water
jets are o-ring sealed I like to chamfer the hole to allow the o-ring
to seal better. Without a chamfer the o-ring doesn't have any
support and can tear. Be sure to remove all metal filings from
inside your intercooler. You can use compressed air or even a
garden hose to completely flush out the intercooler.
Select the two Hydramist
jets that fit your needs. For sub 350 whp use one .9 and one .8
mm jet. For 350+ whp use one .9 and one 1 mm jet. The
water flow can be increased or decreased within your Hydra EMS 3D PWM
Hydramist map. Thread both jets into your intercooler.
Insert 4 mm high
pressure hose onto water jets and combine with the supplied "Y"
Step Five: Mounting
the High Speed Valve and Water Flow Sensor
the Hydramist High Speed Valve (HSV) and Water Flow Sensor for
installation. We decided to use zip ties to mount the HSV and
Flow Sensor to the AC line. Take note of the water flow
direction of the HSV. The Flow Sensor has not specific in or out
so mount whatever way is most convenient. Connect the HSV and
Flow Sensor with a short section of 4 mm high pressure hose. The
6 mm high pressure hose from step 3 will be inserted into the inlet
of the HSV.
Locate the pins for the
HSV connector and crimp them to the matching brown and red wires.
Insert the pins and wires into the HSV connector making note of wire
colors. Run wires through the firewall grommet.
Run the cable from
the Water Flow Sensor through the firewall grommet also.
Step Six: Installing
the Hydramist DDS3 Display Gauge and DDS3 Junction Box
suitable mounting location for the 52 mm Hydramist gauge. This
usually requires mounting in a gauge pod or roll bar mount (not
the Hydramist DDS3 gauge wiring harness and strip a small amount of
wire sheathing off the end (approximately 3 mm).
your Hydramist DDS3 Junction Box. Insert the Hydramist DDS3
display gauge wiring harness into the corresponding screw terminals.
Match location and wire colors and securely screw down terminals.
rest of your wires from your HSV, Water Flow Sensor, and Pump to your
Hydramist DDS3 Junction Box. Match location and wire colors and
securely screw down terminals.
harness pins two wires into your Hydra EMS Wiring Harness and provides
the signal for map switching and PWM control of the High Speed Valve.
two pins will be inserted into the small blue Hydra connector.
Remove the dark blue locking tab with a flat blade screw driver and
insert pins into the correct location. Your Hydramist is
provided with a wiring diagram.
Step Seven: Finishing
check to make sure all your electrical connections are secure and all
wires and harnesses have been plugged in to the Hydramist DDS3, Hydramist
Pump, Hydramist HSV, Hydramist Water Flow Sensor, Hydramist Water Level
Sensor, Hydra EMS, and Hydramist 40 Amp Relay. Reinstall your
intercooler and whatever interior panels were removed. The final
step of the installation is to connect the main power cable to the
positive terminal of your car's battery.
Step Eight: Mapping
your Hydra EMS
3D PWM Map 11 as your Hydramist HSV map. This map is load vs.
RPM and the values denote duty cycle of the HSV for a given boost and
rpm. The load and rpm sites are 0% to 100% and signify the minimum and
maximum range in your fuel map. So if the greatest boost level
in your fuel and spark maps are 31 PSI then the 100% load site = 31
psi. Element Tuning customers can be provided with this map.
When a boost and rpm
level is reached in this map and the HSV has a duty cycle higher than
10% this will automatically activate the Hydramist pump. If
within 2 seconds the Hydramist Water Flow sensor does not register
water flow on the Hydramist DDS3 gauge the system will automatically
revert back to the regular fuel and spark maps in the Hydra EMS.
While the Hydramist is
active fueling is controlled by the Fuel Auxiliary Trim Map.
This map is a function of the main fuel map. At the desired
boost and rpm point you will use this map to subtract fuel from your
main fuel map. Element Tuning customers can be provided with
It's important to reduce
fuel in this map only when water flow is realized. So if your
Hydramist turns on at 10 psi do not remove fuel until after 10 psi.
This map shows 2 degrees of timing added into the idle areas.
This was used just for testing to ensure the map switching operation
While the Hydramist is
active ignition timing is controlled by the Spark Auxiliary Trim Map.
This map is a function of the main spark map. At the desired
boost and rpm point you will use this map to add ignition timing to
your main spark map. Element Tuning customers can be provided
with this map.
It's important to add
ignition timing into this map only when water flow is realized.
So if your Hydramist turns on at 10 psi do not add ignition timing
until after 10 psi. This map shows 2 degrees of timing added
into the idle areas. This was used just for testing to ensure
the map switching operation was functional.
Step Nine: Adjusting
your Hydramist DDS3 Display Gauge
To activate your
Hydramist system you must press (red) the "on" button. When "on"
the Hydramist is active and your Auxiliary Maps are enabled. If within
2 seconds of your HSV injecting water flow is not realized then the
Hydra will revert to the standard fuel and spark maps. When the
Hydramist DDS3 Diplay Gauge is "off" the Hydra reverts to the standard
fuel and spark maps.
W.Injection = Display's when system is on
Water Level =
Illuminates when water level is low. Pump will be turned off
Shows flow from water flow sensor
Illuminates when Hydra Auxiliary Maps are enabled
SC = Adjusts
the range of flow display
WL = Water
flow low fault
WH = Water
flow high fault
Depending on when you purchased your Element Tuning Hydra EMS your Hydra
may not already be configured to run the Hydramist. Don't worry as
this can be adjusted in the software with the correct unlock pass code.
All Element Tuning customers will need to email
your Hydra EMS serial number so we can provide you with the unlock pass
code to access PWM Map 11. Once this feature is unlocked you can
upload a copy of your map and email it to use where we can insert base
settings for your Hydramist.
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