Snow Performance 20020 User manual

© 2010, Snow Performance, Incorporated
INSTALLATION INSTRUCTIONS
FOR PART #20020 MC/MC2/DOM
WATER / METHANOL INJECTION
SYSTEMS
NATURALLY ASPIRATED
/CARBURETED

© 2010, Snow Performance, Inc
CONTENTS
Contents 3
Introduction 4
Installation – Mechanical 5
Installation – Electrical 11
Tuning the System 12
Testing the System 14
Tuning uick Reference 16
Maintenance 16
Fluid Level Switch 17
Installation Note/Disclaimer 18
Warranty Information 19
Contact Us 21
Have a question?
FA : www.snowperformance.net/faqs.php
CAUTION
You must completely read though these instructions before
installing and operating this product. ailure to do so can
result in damage to this product and the vehicle.

© 2010, Snow Performance, Inc
Kit Contents
Parts
o UHO Pump (Ultra High
Output)
o 3 Qt Reservoir
o 10 ft High Pressure
Tubing
o 3 ft Black Wire Loom
o 18” 1/8” Silicone Tubing
o Carburetor Plate
(2 Plates for MC2)
o Solenoid Upgrade
Electrical Packet
o 1 Green LED
o 2 Blue Butt Connectors
o 1 Wire splice
o 1 Large Eyehook
o 1 Small Eyehook
o 1 Male Connector
o 1 emale Connector
o 1 Vacuum “T”
o MCVC Controller With
Harness
o 10 Tie Wraps
o Level Switch Upgrade
Required Tools
Adjustable Wrench
Utility Knife
Screwdriver – Phillips
5/16” Open End Wrench
Mechanical Packet
o 1 Nozzle Holder
o 1 Reservoir itting 3/8
NPT to ¼” tube
o 8 #8x1&1/2” Screws
o 8 #8 Washers
o 4 #6x1/2” Screws
o 1 E-6000 (GOOP)
o Dual Nozzle Upgrade
(MC2 Only)
Nozzles
o 60ML/MN (1)
o 100ML/MN (2)
o 175ML/MN (3)
o 225ML/MN (4)
o 375ML/MN (5)
o 625ML/MN (6)
Upgrades
o Bulkhead
o 2.5 Gallon Reservoir
o SafeInjection®
o Nitrobooster®
o Dual Nozzle
o Boost Juice

© 2010, Snow Performance, Inc
Introduction
- Please refer to system diagram during install. The Level Switch
Upgrade (#40030) is
shown.
Nozzle Identification Chart:
Nozzle
Number Nozzle Size
Nozzle
number Nozzle Size
1 60 ml/min
4 225 ml/min
2 100 ml/min
5 375 ml/min
3 175 ml/min
6 625 ml/min
© 2010, Snow Performance, Inc
Contact Us:
Phone
Office [phone]
ax [phone]
Tech Support Line (Toll ree) [phone]
Web
http://www.snowperformance.net
Email
[email protected]
[e-mail]
[email protected]
Mail
Snow Performance, Inc
1017-A East Highway 24
Woodland Park, CO 80863
Notes
The contents of this document are subject to change without prior notice.
No part of or this entire document may be reproduced in any form
without prior written permission of Snow Performance, Inc under the
copyright except for private use.
The names, addresses and telephone numbers mentioned are current as
of January 1, 2009. Note that this information is subject to change.
Please refer to www.snowperformance.net for current information.

© 2010, Snow Performance, Inc
LIMITATION O LIABILITY
REPAIR OR REPLACEMENT O A DE ECTIVE PRODUCT IS THE ORIGINAL RETAIL
PURCHASER’S EXCLUSIVE REMEDY UNDER THIS WARRANTY.
DAMAGE OR INJURY TO THE ORIGINAL RETAIL PURCHASER, TO HIS OR HER
VEHICLE, CARGO, OR PROPERTY, AND/OR TO ANY OTHER PERSON OR
PROPERTY IS NOT COVERED BY THIS WARRANTY.
THIS WARRANTY IS EXPRESSLY MADE IN LIEU O ANY AND ALL OTHER EXPRESS
WARRANTIES, WHETHER ORAL OR WRITTEN. SNOW’S SOLE LIABILITY IS LIMITED
TO THE REMEDY SET ORTH ABOVE. IN NO EVENT WILL SNOW BE LIABLE OR
ANY DIRECT, INDIRECT, CONSEQUENTIAL, INCIDENTAL, SPECIAL, EXEMPLARY, OR
PUNITIVE DAMAGES OR OR ANY OTHER DAMAGES O ANY KIND OR NATURE
(INCLUDING, BUT NOT LIMITED TO, LOST PRO ITS OR LOST SALES). SOME
STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION O INCIDENTAL OR
CONSEQUENTIAL DAMAGES, SO THE ABOVE LIMITATIONS MAY NOT APPLY TO
YOU.
Non-Warranty Repair/Retest
Products returned due to damage or misuse and Products retested with no problem found
are subject to repair/retest charges. Product will be returned to customer at customer’s
expense. A credit card number must be provided in order to obtain an RMA (Return
Merchandise Authorization) number prior to returning Product.
© 2010, Snow Performance, Inc
Installation – Mechanical
Step 1 Reservoir Install
Install the reservoir fitting with a small amount of E6000® sealant and
mount reservoir in engine compartment using #8x1½” sheet metal
screws and washers provided. Note that the nozzle(s), not the reservoir,
should be the highest point in the system.
Optional: The factory windshield washer reservoir can be used as the
reservoir for your system with the optional bulkhead fitting. (PN# 40080)
• Drill 9/16” hole in desired bulkhead location. Note the bulkhead can
be installed horizontally to direct tube toward pump.
• Remove one nut from bulkhead and turn the remaining nut to the end.
• eed red tubing through the drilled hole and up and out of the top of
the reservoir.
• Attach tubing to the bulkhead on the side opposite the nut.
• Pull the tubing through the bulkhead hole until the bulkhead seats
against the inside of the reservoir.
• Apply E6000® sealant (included) around bulkhead.
• Slide the nut you had previously removed up onto the tube and thread
onto bulkhead.
• While pulling firmly on the red tubing, tighten the outer nut using a
17mm socket (only needs to be hand tight). A ratchet is not needed.
• Once sealant has set, fill reservoir with water and check for leaks.

© 2010, Snow Performance, Inc
Caution******
To avoid gravity feeding of fluid with rear mount reservoirs, it is essential
to use a check valve in-line between the reservoir and pump. Do not
operate your rear mount equipped vehicle without a check valve
installed.
Caution*******
Whenever the nozzle is mounted post-throttle plate, to avoid siphoning
fluid at idle, it is essential to use a solenoid upgrade inline between the
reservoir and pump.
Step 2 Pump Install
Mount the pump so the inlet is positioned at the lowest point of the
reservoir or lower. Pump can be mounted horizontally or vertically using
the supplied screws and washers. Ensure that no sharp bends in the
high pressure tube occur near the pump. Sharp bends can cause stress
on the inlet and outlet ports of the pump, causing leaks. Trim tube with a
utility knife or razor blade, making sure to eliminate any burrs or kinks on
the end. Insert firmly into the pump about ½ inch through the light grey
locking collar. Note the arrows indicating flow direction on the top of the
pump. To remove the hose, gently and evenly push the light grey locking
collar into the head unit of the pump, then pull on the hose gently.
© 2010, Snow Performance, Inc
Warranty
Warranty Policy
Snow Performance, Inc. warrants that the Product shall conform to and perform in
accordance with published technical specifications and shall be free of defects in materials
and workmanship for 90-days providing:
1. You are the original purchaser and provide proof of purchase.
2. or 1-year warranty, the Warranty Card that came with system (not applicable to
separate parts purchases) is returned to Snow within 45-days of purchase. If valid warranty
card not on file with Snow, the standard 90 day warranty applies from date of purchase.
3. or Lifetime warranty, , the Warranty Card that came with system (not applicable to
separate parts purchases) is returned to Snow within 45-days of purchase and Boost
Juice® injection fluid is used exclusively.*
3. An RMA # has been attained and is displayed on package containing returned part.
4. Parts Warranty ~ 90 day warranty on parts purchased separately if used in conjunction
with a Snow System. No warranty implied if used with a non-Snow part/system.
Subject to Snow’s inspection of the product, Snow will remedy defects in materials and/or
workmanship by repairing or replacing, at Snow’s option, the defective product without
charge for parts or labor, subject to the limitations and exclusions described in this
warranty.
This warranty does not cover problems caused by normal wear and tear including aesthetic
oxidation of surfaces, accidents, unlawful vehicle operation, or modifications or repairs to
product not performed or authorized by Snow. This includes any product that is
disassembled or taken apart for any reason.
* Boost Juice® usage evidenced by invoices/ receipts.
In addition, this warranty does not cover problems resulting from conditions beyond Snow’s
control including, but not limited to, theft, misuse, overloading, or failure to assemble,
mount or use the product in accordance with Snow’s written instructions or guidelines
included with the product or made available to the original retail purchaser.
In the event of failure, Snow will repair or replace the part at Snow's sole discretion.
ailures resulting from misapplication or misuse of the Product, failure to adhere to any
specifications or instructions, or failure resulting from neglect, abuse, accidents, or act of
nature are not covered under this warranty.
Warranty service may be obtained by calling 719-633-3811, getting an RMA (Return
Merchandise Authorization), delivering the part to Snow along with proof of purchase.
Customer agrees to insure the Product or assume the risk of loss or damage in transit, to
prepay shipping charges to Snow, and to use the original shipping container or equivalent.
Shipping for Warranty replacement parts shipped outside the continental US will be
charged to customer.
Non-Warranty Repair/Retest
Products returned due to damage or misuse and Products retested with no problem found
will be returned to customer at customer’s expense.

© 2010, Snow Performance, Inc
Install Notes
Pump Setting ____________(psig)
Nozzle Size ____________(ml/min)
Boost / Vacuum setting _________
Misc:
Disclaimer
Do not use this product until you have carefully read the following agreement.
This sets forth the terms and conditions for the use of this product. The installation of this
product indicates that the BUYER has read and understands this agreement and accepts
its terms and conditions.
Performance products by their nature are designed to increase horsepower and
performance not engineered in the original vehicle and the increased stress could result in
damage to related systems. This is a high performance product – use at your own risk.
Snow Performance Inc., Its agents, employees or owners shall not be under any liability
whether in contract or otherwise whether or not resulting from our negligence or contents of
information supplied for any damage or loss resulting from such information.
The BUYER is responsible to fully understand the capability and limitations of his/her
vehicle according to manufacturer specifications and agrees to hold the SELLER harmless
from any damage resulting from failure to adhere to such specifications.
The SELLER disclaims any warranty and expressly disclaims any liability for personal
injury or damages. The BUYER acknowledges and agrees that the disclaimer of any
liability for personal injury is a material term for this agreement and the BUYER agrees to
indemnify the SELLER and to hold the SELLER harmless from any claim related to the
item of the equipment purchased. Under no circumstances will the SELLER be liable for
any damages or expenses by reason of use or sale of any such equipment.
The BUYER is responsible to obey all applicable federal, state, and local laws, statutes,
and ordinances when operating his/her vehicle, and the BUYER agrees to hold SELLER
harmless from any violation thereof.
The SELLER assumes no liability regarding the improper installation or misapplication of its
products.
It is the installer's responsibility to check for proper installation and if in doubt, contact the
manufacturer.
© 2010, Snow Performance, Inc
Measure the distance from the reservoir outlet to the pump inlet. Cut the
¼” red tubing using utility knife. Make cuts are as square as possible.
Ensure there are no kinks in the tubing and insert tubing into quick
disconnects at pump and reservoir until fully seated. Keep the pump
within 2 feet of the reservoir.
Caution******
Pump must be shielded from road debris and tire wash.
ailure to do so will result in pump failure

© 2010, Snow Performance, Inc
Step 3 Nozzle Selection
Nozzle sizing is a function of horsepower, which approximates the
engine airflow, and boost, which approximates intake charge heat.
Recommended starting points:
MC/DOM (Single Carburetor Plate):
250 - 350 RWHP: 100ml/min nozzle.
350 - 475 RWHP: 175ml/min nozzle
475 - 800 RWHP 375ml/min nozzle
MC2 (Double Carburetor Plates):
350 - 500 RWHP: 2 X 100 ml/min nozzle.
500 - 925 RWHP: 2 X 175 ml/min nozzle
925+ RWHP 2 X 225 ml/min nozzle
Assemble desired nozzle into nozzle holder using E6000® sealant. The
end of the nozzle with the fine mesh screen is to be inserted into
the nozzle holder. Torque 1/2 turn past finger tight. Do not use Teflon
sealants on Snow Performance fittings.
Correct Incorrect
NOTE: If nozzle is mounted lower then the reservoir, a Solenoid Upgrade
(#40060) must be used to prevent draining.
© 2010, Snow Performance, Inc
Fluid Level Switch
Instructions
• Locate desired level switch mounting position. Suggested
placement is 1/5 of max reservoir height.
• Carefully drill side of reservoir using 13/16” bit. A step bit is
recommended for best drilling results. Hole
must be free of nicks or shavings for proper
sealing.
• Remove rubber seal from level switch.
Insert seal into reservoir until fully seated.
Goop can be used around the edges of the
hole.
• Lubricate exterior of level switch with water
and insert into seal until fully seated. Position level switch so GT
symbol is at six o’clock position.
• Wait 30 minutes for Goop to cure, then test for leaks. With fluid
level above level switch, float should be angled up. With fluid
level below level switch, float should be in horizontal position.
• Connect one black wire from level switch to ground.
• Connect other black wire from level switch to white wire from
LED.
• Connect red wire from LED to +12 volt key on power source.
Low luid LED
Red
Black
Black

© 2010, Snow Performance, Inc
Tuning uick Reference
The power potential of the system is realized through increased
timing. The large gains on octane and cooling provided by the
system make this possible, even on standard pump fuel.
The Boost Cooler® adds an alternate fuel source as well as
significantly cools combustion. With the Boost Cooler®, one does
not need to cool combustion with overly rich air/fuel ratios. To
minimize combustion quench, you should start with an air to fuel
ratio of 12.0-12.5:1.
Injecting water/methanol lower than 3300-3500 RPM could result in
combustion quench. All vehicles are different. If the engine bogs or
loses power, then it is coming on too early, the quantity is too
much, or there is not enough methanol in the mixture (50/50
water/methanol recommended).
Caution******
Prolonged quench may cause lower engine damage over a period of
time.
Maintenance – Remove nozzle(s) and clean screen filters at
least once per year using carb cleaner.
The Boost Cooler® has been designed to operate with high
concentrations of methanol. Oil or other additives are not required
for system lubrication.
For best performance, cooling and system life it is recommend that
Snow Performance Boost Juice™, part #40008, be the exclusive
fluid used in the system.
© 2010, Snow Performance, Inc
Step 4 Nozzle Mounting
This system uses the carburetor spacer plate(s) to mount the nozzle(s).
Note that there are two ports for the nozzle on each plate. Use either
one, and block the other with a 1/8” NPT plug (available at any hardware
store) or use it as a boost reference point. Be sure to use a small amount
of E6000® sealant to ensure a leak free installation of the nozzles. In
high powered single carb applications over about 1400HP, two nozzles
may be required on a single plate. A single nozzle will be able to evenly
distribute water-methanol to all cylinders due to the ultra-fine atomization
and high pressure the system provides.
Note also that the spacer plates include fresh gaskets and long studs to
allow use with a 4150 or 4500 style carburetor and manifold and a clean
installation.
Step 5 Solenoid Mounting
The solenoid will prevent any siphoning of fluid under vacuum (such as
at idle). It has two ports, labeled 2 (inlet) and 1 (outlet). Using a small
amount of E6000® sealant, install the included fittings into these ports.
Torque to one half turn past finger tight.
The solenoid must be in-line between the pump and the nozzle(s) to
operate properly. Typical mounting locations are on the firewall. The “2”
port is on the pump side and the “1” port is on the nozzle side of the
solenoid.
The solenoid features two black wires. One of these connects to the
green wire of the controller harness. The other goes to ground. It is not
important which wire goes to which place.
Single Carb:
Connect hose from the “1” port of the solenoid to the nozzle holder.
Twin Carb:
Connect hose from the “1” port of the solenoid to the ‘T’ fitting. Connect
hose from the ‘T’ fitting to each nozzle holder. (See installation diagram)
Step 6 Nozzle Connection

© 2010, Snow Performance, Inc
Measure the distance from the solenoid (single carb MC/DOM) or ‘T’
fitting (twin carb MC2) to the nozzle holders. Cut the ¼” tubing using
utility knife. Make cuts are as square as possible.
Ensure there are no kinks in the tubing and insert tubing into quick
disconnects until fully seated. Gently pull on tubing to ensure a good
connection.
Note the shallow angle of the tube to the nozzle holder.
(Carburetor plate not shown, optional weld-in
bung installed on tube.)
Use tie wraps to help route tubing and to ensure it doesn't contact
moving or hot parts in the engine compartment. Have tubing connect to
quick connect fittings at shallow angles. Having an immediate sharp
bend may unseat the tubing from the internal o-ring and create a leak.
Continual insertion and removal from quick connect fittings will mar the
end of the tubing. Over time the internal gripping teeth may lose their
hold of the tubing which may create a leak. If this occurs simply remove
the tubing and make a fresh cut using a razor blade.
© 2010, Snow Performance, Inc
If pump goes on and fluid level doesn't go down, there is an obstruction
in the tube or nozzle. Activation of the pump for short intervals will purge
air from the system after installation. This can be accomplished during
initial use.
Step 2 Test Controller
With the nozzle removed from intake, start vehicle and let it idle for 10
seconds. Set the rpm switch with the motor at 1500. Increase engine
RPM above 1500 rpm and remove the vacuum line from the controller.
The controller is now detecting atmospheric pressure which is the same
condition as wide open throttle. The pump should activate, green LED
should go on, and the fluid level in tank should go down. If system does
not activate, check all wiring connections.

© 2010, Snow Performance, Inc
Testing the System
Note: for best results, prime pump before use
To clear air from the pump and insure that the system is primed:
• ill reservoir with water approx ¼ full.
• Remove tubing from nozzle (or solenoid if solenoid used in-line
between pump and nozzle) and run tube into separate container.
• Apply 12 VDC to red pump wire for approximately 5 seconds or
until fluid flow is consistent.
• Pump is now primed. Reconnect tubing from pump outlet to
nozzle (or solenoid).
If using a check valve in between the pump and the reservoir:
Remove the check valve and place a solid piece of tube between the
pump and the reservoir and prime the system. Then replace the check
valve in between the pump and reservoir.
Step 1 Test Pump and Mechanical System
Electrically disconnect all control and SafeInjection® modules.
Disconnect tube from the outlet port of the pump. Using a 12 volt source,
apply power to red wire of pump. Pump should activate, green LED
should go on, and fluid level in tank should go down. It is recommended
to also check the nozzle spray pattern while following this procedure.
Also check for leaks. Never flow liquid through a SafeInjection® module
without all nozzles connected.
© 2010, Snow Performance, Inc
Installation - Electrical
Variable Controller Installation
The figure above shows the MCVC controller layout. Attach controller to
secure location with easy access in engine bay or passenger
compartment. The VC series controllers are designed to withstand
engine bay conditions, but should not be mounted directly to the engine
block. Connect vacuum hose from intake manifold to hose barb on front
of controller. Note the white lettering and colored bands on two of the
three black wires on the controller.
CAUTION: Disconnect the negative battery terminal while
connecting wires to prevent electrical fire or damage to controller.
• Connect the Black wire labeled “WB” to a good ground location.
• Connect the wire labeled “WG” to Pump Red power wire. The wire
will have a green band on it near the front face of the controller.
• Connect wire labeled “WR” to +12V key on source. When selecting
a 12V key-on source, try to find a dedicated circuit fused for 10-15
amps. The wire will have a red band on it near the front face of the
controller.
• Connect YELLOW wire to low voltage side (-) of primary ignition coil
or engine tachometer signal wire. Ignition auxiliary tachometer
outputs are ideal. Many aftermarket ignitions (MSD, etc) have 12V
outputs for tachometers that are ideal.
• PURPLE wire is only used during initial setup, and then can be tied
out of the way.
Always have a good electrical ground connection.
Poor ground will result in erratic operation.

© 2010, Snow Performance, Inc
Calibrating RPM Switch
The MCVC has an internal RPM switch that is programmable. This
feature sets the minimum RPM required to enable injection. The RPM
switch can be programmed at any time with the following steps:
• Start engine and wait 5 seconds for controller power up delay.
• Rev engine to desired minimum injection RPM point and hold throttle
position constant. Below this RPM, the system will not inject.
• Press and hold PURPLE wire on the controller to ground for 5
seconds. During this time controller will sample RPM signal and
save reading to internal memory.
The factory programmed RPM point of the MCVC is beyond normal
vehicle range and MUST be set during install per above procedure
before injection will occur. If stuttering or bogging occurs at the onset of
injection, you may need to increase the RPM point.
Variable Controller Tuning
The MCVC has a built in
5 second power up delay.
This feature helps
prevents injection during
engine starting.
The MCVC is designed to control injection based on engine load. Once
the RPM switch is calibrated, the controller will activate injection based
on vacuum whenever the engine RPM is greater then the calibrated
RPM.
• Adjust the “Start” point first by turning dial clockwise to about one
third of the engine’s max vacuum. This sets the vacuum pressure
required to activate the injection system. If stuttering or bogging
occurs at the onset of injection, increase the RPM point or the Start
dial point.
• Next, adjust “ ull” to the engines minimum vacuum, usually 0.
• It may be possible to set the full point at a point before 0 for more
aggressive injection.
12
Full
6
in.Hg
vac
1 12
1
0
Start
6
MCVC
© 2010, Snow Performance, Inc
Controller Operation Example
The above chart plots three different settings for the MCVC
water/methanol injection controller
or setting 1, left, the chart shows the Start dial at 14 in. Hg and the ull
dial at 6 InHg. At 14 InHg of manifold vacuum, the pump will operate at
10% injection output. At 6 InHg of manifold vacuum, the pump will
deliver 100% of injection pressure.
or manifold vacuum readings between the Start and ull settings, the
controller will linearly adjust the pump pressure as shown on the graph.
Example:
On a vehicle that idles at 15 inches of vacuum and cruises at
approximately 7 inches, we will start injection at about 4 inches of
vacuum. The full dial will be set at 1 inch of vacuum. The minimum
RPM should be set to 3000 to avoid any bogging. This will allow the
system in inject under moderate throttle conditions, with injection
increasing as engine load increases.
0
10
20
30
40
50
60
70
80
90
100
14
12
10
8
6
4
2
0
Vacuum in.Hg
Start
P
u
m
p
O
u
t
p
u
t
%
Full