Nitrous Express Hitman EFI User Manual
Page 2

NOZZLE MOUNTING
The location of the nozzle will dictate the loca-
tion of the solenoids, (limited by the 12 inch nozzle
feed lines). The mounting location for the “Piranha”
nozzle on factory installed Fuel Injection systems, is
in the air inlet tube at a point about 2-6 inches before
the throttle body. The actual spacing is not important.
Note: It may be necessary to vary the exact mount-
ing point due to space and/or accessory limitations on
certain models. The above photos should be used as a
guide for proper nozzle location.
Remove the air inlet tube. Drill a 3/16” hole in the
location you have chosen for the nozzle placement.
This area should be as flat as possible to assure proper
sealing of the nozzle.
Using a silicone RTV sealer, apply a thin bead
around the nozzle threads. Thread the Piranha nozzle
into the air tube and tighten so the nozzle discharge is
pointing toward the throttle body.
Choose and insert the 35hp N2O and Fuel jets
(REFER TO JETTING CHART) into the nozzle body.
(It is always best to start with the lowest horse power
setting and work your way up) Attach the blue stain-
less braided line to the nozzle fitting labeled N2O and
the red braided line to the nozzle fitting labeled FUEL.
NOTE: Always check each jet for obstructions before
using.
ROUTING THE NITROUS FEED LINE
NOTE: Place a piece of tape over both ends of the
hose to prevent debris from entering the feed line
during the routing process.
The 12-foot D-4AN nitrous feed line may be
routed to the engine compartment either through the
passenger compartment or under the vehicle. Route
the line carefully to prevent the possibility of restrict-
ing nitrous flow. If routed under vehicle, locate and
drill a 3⁄4 inch diameter hole in a suitable area near the
bottle valve for the main line. Starting at the bottle
nipple (Do not attach to the bottle nipple yet) route
the line to the engine compartment. Following the
factory fuel lines is usually the best path.
Note: Keep maximum clearance between all moving
parts, suspension components and hot engine com-
ponents, securing the supply line where possible
(“Zip-Ties” work best here). Be especially careful of
the feed line being near any “HOT” electrical leads a
spark will cause a permanent leak in the nitrous feed
line.
SOLENOID MOUNTING
1. Install all solenoid fittings using Teflon based sealer
(NO TEFLON TAPE PLEASE) at this time. The
N2O filter is mounted to the 1/8 NPT inlet side of
the nitrous solenoid.
2. The optional solenoid mounting brackets are
designed to be universal. Start by mounting the