Nitrous Express MainLine Nitrous Systems - Manual (Page 4)

1. Your engine should be tuned to its maximum power prior to
nitrous usage.
2. The ignition is an integral part of the nitrous system and
must be able to ignite the mixture under very high cylinder
pressures. The stronger the spark the better!
3. In stock engine applications and street usage the spark plugs
should be at least 2 steps colder than stock. Do not use
platinum tip, extended tip or any plug with multiple ground
straps or split ground straps. When in doubt about heat range
always go one step colder. A spark plug that is to “Hot” will
cause detonation, burned plugs, poor performance, and
engine damage.
4. Most MainLine EFI applications will require no timing
retard. You may run as much timing as you normally would,
if you have adequate octane to prevent detonation. MainLine
recommends Chemical X (NX PN16003) octane booster to
insure trouble free nitrous usage.
5. Carbureted vehicles using stock compression ratios may not
need any timing retard when using the smallest horsepower
settings, however for higher compression engines timing
retard is a necessity. A base line setting of 1-2 degrees of
retard for every 50 horsepower of nitrous boost is a safe
starting point. More or less timing may be required, reading
the spark plugs is the only safe way to determine if you
have the right amount of timing for your particular engine
combination.
6. Your fuel system is also an integral part of the nitrous
system, be sure it is in top shape and all filters are clean.
7. Engine operating temperature should be at or above 160
degrees prior to nitrous usage.
8. Never “lug” your engine and engage the nitrous system, use
the system at wide-open throttle only, nitrous should not be
used below 2000 rpm’s. If you do any of the above a serious
“Back Fire” could result in engine damage.
9. The better the exhaust system the better the nitrous system
will work.
10. Do not attempt to drill or alter the jets, solenoids, or the
nitrous plate (carb only). These items are engineered to
their maximum capability. Any modification you can make
will decrease power and destroy engine parts.
11. Do not mix or attempt to match any other brand solenoids
with this system. Do not attempt to mix or match any other
brand plate or nozzle with this system. Do not attempt to use
any other brand kit as a second stage with this system. Our
nitrous technology is far superior to any of our competitors.
Any attempt at this could lead to serious engine damage.
12. All of our systems are designed to operate at 1050-PSI
bottle pressure. This is extremely important and cannot
be stressed enough. If your bottle pressure is below 1,050
PSI the system will run rich and will not produce the
advertised horsepower. If the bottle pressure is above 1,050
PSI the system will run lean, possibly damaging engine
parts. This pressure is easily monitored by using a liquid
filled pressure gauge (NX PN 15509). Note: When the
ambient temperature is below 97 degrees a bottle warmer
is required (NX PN 15940). A bottle jacket (NX PN15945)
will help stabilize bottle pressure in the winter and summer.
CAUTION: NEVER USE AN OPEN FLAME TO HEAT
A NITROUS BOTTLE. THIS IS A VERY DANGEROUS
AND POTENTIALLY FATAL PRACTICE!!!!!!!!!!!
13. A purge valve (NX PN15600) is recommended on all
MainLine systems. When the weather begins to get hot a
purge valve is worth up to a tenth of a second on a ¼ mile
pass. Note: The correct purging procedure for drag racing
is: 1. Complete the burnout. 2. Light the pre-stage bulb.
3. Push the purge button three times, one second each. 4.
Stage immediately, GO FAST.
14. If there is a question about the purity of your nitrous supply,
a filter (NX PN15607) should be used when refilling your
bottle. Just attach the filter to your bottle when you take it to
be refilled. Contaminated nitrous will cause serious damage
to the nitrous solenoids and possibly to your engine. This is
a lifetime renewable filter.
15. If you have questions about the suitability of your torque
converter or gear ratios, call the factory tech line for the
inside scoop.
16. Your nitrous bottle should be turned off when not in
use (even between runs). An remote bottle opener (NX
PN11107) will make this task much easier.
17. Start with the lowest power setting in your system.
Remember start out small and work your way up, MainLine
systems produce more real horsepower than any other brand
on the market today.
18. If the solenoids must be disassembled for cleaning or
rebuilding always use the proper wrench (NX PN 15921).
Do not use any clamping devise on the solenoid tower,
instant non-warranty, damage will result.
19. Premium grade unleaded or leaded fuel is required on all
Mainline nitrous applications. If your engine has been
modified or has higher than stock compression racing fuel
may be required. MainLine recommends Chemical X (NX
PN16003) octane booster to insure trouble free nitrous
usage.
20. All vehicles, including full competition racecars, must have
an alternator to provide adequate amperage required by
today’s racing accessories. Add up all the amps required by
your car, you’ll be surprised!
21. If you notice some of the N2O-fuel orifices are not perfectly
aligned in your MaiLine plate system, do not be concerned.
This misalignment has been engineered into the system to
direct fuel to specific cylinders.
22. If you have trouble with your MainLine system or any
related parts, call your dealer first. If you still need help
call the factory tech line 940-767-7694 9:00 AM - 4:00 PM
Mon-Fri. We are the nitrous experts and will give straight
answers to your questions.
In conclusion……….
This instruction sheet and power tuning tips are valid only for a
MainLine system. If you have a kit from another manufacturer
this information will not help you! A tune up from any other
brand of nitrous kit will not work with the MainLine System.
DO NOT LISTEN TO:
A. YOUR BUDDY!
B. YOUR BUDDY’S FRIEND!
C. THE LOCAL NITROUS GURU!
D. ANY ARTICLE IN ANY MAGZINE
If you follow the foregoing suggestions, your MainLine system
will operate trouble free and provide years of thrills. ABOVE
ALL REMEMBER TO RACE SAFE AND HAVE FUN!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!
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