| NITROUS CYLINDER INSTALLATION The Nitrous cylinder MUST be mounted EXACTLY as shown
in Fig.1, in this position it will deliver LIQUID Nitrous oxide ( not
gas ), which is ESSENTIAL for optimum performance. If you can't mount the cylinder EXACTLY as shown, phone
for advice. The brackets supplied will provide a secure mounting with quick release straps for ease of
refilling. The VITAL route of the Nitrous supply pipe is for the pipe to run through the inside of the car with
the wiring loom and into the skuttle, between the screen and engine bay (when possible otherwise to the front
grill area), away from any heat source e.g. exhaust pipes, gearbox etc. PULSOID
INSTALLATION The Pulsoids MUST be mounted in as cool a location as possible, see Fig.2, and in a position which is easily accessible for jet changing and tuning,
as the metering jets are located in the outlet of the Pulsoids. The inlet is at a right angle to the Pulsoid
body with the outlet at the opposite end to the mounting bracket. A final consideration when choosing the
Pulsoid location is the pipe routing which is best kept as short as possible ( under 12" between Pulsoid and
injectors if possible ) and neat for optimum performance. NEVER mount the Pulsoids at the back of the engine, on
the bulk head or rear inner wings. Examples of suitable Pulsoid locations in order of preference:
1) skuttle
(between screen and engine bay)
2) front grille
3) FRONT inner wing Xfire INJECTOR
INSTALLATION Our latest Xfire injectors are combined fuel / nitrous injectors. They can be fitted in a
variety of positions and by one of 2 fixing methods. They are usually fitted with the Nitrous inlet nearest to
the airflow meter, although in certain installations this may not be essential. They are usually fitted into the
rubber inlet hose (on injected and turbo cars) by punching an 8mm hole at a suitable location as near as
possible to the throttle body. Secure the injector in place by screwing the retainer provided onto the thread
from the inside of the hose, effectively sandwiching the rubber / plastic of the hose and sealing it to the
Xfire injector. Once fitted into the air pipe the injector should be "aimed" so that the gas and fuel are
injected towards the engine but also so that the gas will "spiral" round the pipe NOT so that it just fires
straight in line with the air flow. ENSURE THAT THE RETAINER CLEARS THE FUEL OUTLET PORT Alternatively they can be screwed into a metal part of the induction system by drilling and tapping a 10 x
1mm ( metric fine ) hole in an appropriate location in the inlet manifold ( for example ). Either way the spacer
provided MUST be cut or turned to the length which allows the FUEL outlet of the injector to PROTUDE clear of
the inner wall of the hose etc. PLUMBING Run a length of the stiff black nylon pipe
included in the kit from the Nitrous cylinder to the Nitrous ( blue ) Pulsoid inlet ( see fig. ). Connect the
pipe at each end by sliding a nut and olive over each end, the tighten the nut ( no more than 2 turns as any
more will crush the pipe and restrict the flow). To check that the pipe is totally sealed, briefly turn on the
Nitrous cylinder valve and inspect for leaks with soapy water at the connections. If a leak is detected tighten
up the nut ( whilst avoiding contact with any escaping gas particles ) until the leak is stopped. When you are
satisfied that the system is gas tight, release the pressure in the system by applying a power and earth to the
wires of the Pulsoid, once again avoiding contact with the escaping gas. To complete the plumbing of the Nitrous
side of the system, cut a suitable length of blue nylon pipe and connect the Pulsoid outlet, to the inlet of the
injector. Plumbing the fuel outlet side of the nitrous system is just a matter of repeating the procedure used
on the outlet side of the Nitrous Pulsoid, but using the red nylon pipe to the fuel ( red ) Pulsoid. FUEL CONNECTION This varies from car to car, but we try to supply a fitting which makes the
systems as easy as possible to fit to your car. Method 1) our unique banjo bolt replaces the existing bolt
fitted to the fuel filter (or the metering head) on many cars. Slightly slacken the existing banjo bolt to let
the fuel pressure leak away, (catch leaking fuel with a rag and then dispose of the rag carefully). Remove the
bolt and washers then refit the bolt and washers supplied. Method 2) our unique pressure test point adapter
provides the easiest connection. Remove the blanking cap, then carefully press the valve stem to depressurize
the system, (catching the leaking fuel with a rag and then dispose of it as above). Remove the valve core, which
is VITAL then screw the adapter supplied with the kit onto the valve body. With both 1 and 2 the next step is
to cut a piece of the flexible red nylon pipe and connect the adapter to the ( red ) fuel Pulsoid ( see fig 4a
). Method 3) Cut into the fuel delivery pipe at a suitable point (see fig. 4b) fit the 'T' piece supplied with
the kit and then connect the third outlet of the "T" piece using the large rubber pipe to the Pulsoid inlet.
THROTTLE SWITCH INSTALLATION The throttle activated micro switch should be mounted to
the throttle body after modifying the universal mounting bracket as required to suit your car. WIRING INSTRUCTIONS Connect the parts as shown in fig. 5, using a grade of wire adequate to carry
15 Amps. It is vital that the connections are perfect and suitable wire is used, otherwise your system may fail
to operate correctly. The main 12v supply should come from the ignition switch, but it can tee off a component
such as the ignition coil as long as the wire grade is adequate to carry the current to both systems. TEST PROCEDURE 1. Disconnect the outlet pipes from the VENOM injector/s and aim the
Nitrous to atmosphere and the fuel pipe into a bottle. Hold both pipes securely and activate the system briefly,
monitoring the results at the open pipe ends. Fuel and nitrous liquid should be seen flowing from the pipes
whilst the system is activated, and should stop flowing when the system is switched off. IMPORTANT: do not use
the system if fuel does not flow when the system is activated or if either fuel or Nitrous still flows after the
system is switched off.
2.IN EITHER CASE PLEASE PHONE FOR ASSISTANCE.If everything is OK ( as it
should be ) proceed to the next step.
3. Connect the pipes back as they were to the injector, start
the engine and run up to normal temperature.
4. Once at running temperature hold the revs at approx
1/3 of maximum ( e.g. max rpm limit 6,000 test rpm 2,000 ) and briefly activate the nitrous system whilst
monitoring the engine response, and the exhaust.
5. Engine rpm should rise (as if you had operated
the throttle) and then fall back to normal as you release the switch, whilst the exhaust should emit blacker
than normal smoke which indicates a rich mixture. If the engine sounds any different to the way it sounds when
you rev up the engine normally, cease testing and report to our technicians. If all goes as it should, then you
can take the vehicle on the road and carry out the next tests.
6. Accelerate hard from say 30 mph up
to 70 mph, then shut off the engine, stop the vehicle and remove the spark plugs for inspection,
7.
repeat the test using nitrous this time and compare the plug colour with before. When using the Nitrous system
you should feel stronger acceleration, and the plugs should be the same or slightly darker colour. If you hear
any noises other than a louder exhaust note, or you feel anything other than a smooth surge of power, cease the
test and contact our technicians. QUICK FIT INSTRUCTION (IN BRIEF) 1) Mount
the nitrous cylinder as shown in Fig. 1 2) Run the supply pipe ( 4mm black
nylon ). IMPORTANT NOTE Never run the supply pipe where it is subjected to heat. 1) Mount the Pulsoids ( blue nitrous, red fuel ) in a cool location near to the front of the car (
if possible ) but as close as possible to the Xfire injectors. 2) Hot components delay and reduce
the impact of the nitrous system 3) Install the Xfire injector/s in the induction system, ( the
injectors need only be screwed in and lightly nipped up ) using a mild loctite sealer on the threads. When
fitting to rubber or plastic inlet hoses the Xfire injectors should be pushed through a tight hole punched in
the hose and the retainer screwed onto the injector from the inside. 4) Run the flexible red (
fuel ) and blue ( nitrous ) pipes from the solenoid outlets to the injectors ( via distribution blocks if it is
a multi-point system ) and connect using the nuts and olives supplied. NOTE; When fitting a direct
port system the distribution block must be mounted so the pipes are horizontal.
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