Nitrous Express MainLine Nitrous Systems - Manual

INSTALLATION INSTRUCTIONS FOR:
MainLine Nitrous Systems
CAUTION: An experienced technician familiar with
the use and handling of high-pressure cryogenic gases
should install this system. If you have any doubt about
your skills this system should be taken to a qualified shop
for installation. If you have decided to attempt the install
yourself please read and understand all of these instructions
before you start. Some of these instructions may or may not
apply to your vehicle, if you have any questions please call
our tech department 940-767-7694 9:00A.M. -4:00P.M. CST.
NOTE: In the interest of keeping costs low some commonly
available pieces have been omitted from MainLine Nitrous
Systems. This list of items is necessary to complete the
installation:
• 14 & 18 gauge automotive type multi-strand wire
• 30 amp relay (optional)
• 4- 5/16 X 1 bolts, washers, and nuts (to mount nitrous
bottle)
• Misc wire ends and connectors
• 3/8 fuel Tee, clamps, and rubber hose (carbureted only)
Before starting, disconnect the negative terminal on the battery.
If you have any questions about your particular car consult a
shop manual.
These instructions are divided into 6 sections:
1. Mounting the Bottle & Routing the Supply
Line
2. Mounting the Plate/Nozzle & Solenoids
3. Plumbing the Fuel System
4. Wiring
5. Testing the System
6. Power Tuning Tips
Mounting the Bottle & Routing the Supply Line
1. Assemble the nut and nipple on the bottle as
shown in Figure “A”. The nitrous bottle should
be mounted outside the passenger compartment; if
this is not possible an external venting blow down
tube is a necessity (NX PN 11708 & 11709). A
minimum of 4-5/16, grade 5, bolts with washers
must be used for a safe installation. The bottle
should be mounted as shown in Figure “A”.
Check beneath floor for obstructions such as fuel
tank, fuel lines, electrical wiring, etc before drilling
holes.
2. Have the nitrous bottle filled with “NY-TROUS
+” nitrous oxide. A local speed shop or a welding
supply shop can usually handle this.
To route the supply line drill a ¾ hole beneath the valve discharge
port. Before beginning the routing procedure place tape over
both ends of the line. Now route the line beneath the car being
sure to avoid all exhaust, suspension and other moving parts.
Following the factory fuel line is usually the safest. Be careful to
avoid any positive 12-volt sources. One small spark to the outer
braid of the line will destroy it. Secure the line carefully, zip ties
work best here. Before connecting the line to the bottle, purge
the line of all possible debris by carefully blowing compressed
air through the line for several seconds. Connect the line to the
bottle nipple and tighten securely.
Mounting the Plate/Nozzle & Solenoids
If your car has a carburetor skip to section “B”, if your car is EFI
use section “A”:
Section “A” EFI:
1. The nitrous/fuel discharge nozzle should be
mounted in the air duct that connects the air cleaner
to the throttle body.
2. Drill a ¼ inch hole between the MASS Air Meter
and the throttle body in the plastic ducting.
3. Thread the nozzle into this hole until all threads are
covered. Be sure the nozzle discharges toward the
EFI
CARB
Figure A
1