FuelTech FT INJECTOR 170 LB/H User manual

9544
USA
FuelTech EMS
455 Wilbanks Dr.
Ball Ground, GA, 30107, USA
Phone: [phone]-FUEL
[phone]
[email protected]
www.FuelTech.net
FuelTechUSA FuelTechEMS
BRASIL
FuelTech Ltda
Av. das Indústrias, 864,
Bairro Anchieta
CEP 90200-290,
Porto Alegre, RS, Brasil
CNPJ 05.704.744/0001-00
Fone: [phone]
[email protected]
www.FuelTech.com.br
170 LB/H HIGH IMPEDANCE
ALTA IMPEDÂNCIA
MANUAL DO USUÁRIO | MANUAL DE USUARIO
OWNER’S MANUAL
Capa_guia_rapido_Injetores.indd 4-5Capa_guia_rapido_Injetores.indd 4-5 26/04/2023 12:10:4526/04/2023 12:10:45

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Presentation
Thank you for purchasing FT Injectors. In this manual you will nd all the information you will need to ensure proper operation, conguration and
maintenance of your injectors.
The FT Injector is available ow rate: 170 lb/h
Each FT Injector is made with the best possible materials, including corrosion-resistant internals, allowing them to be used with any fuel from gasoline
to Nitromethane, Nitropropane and even fuels that contain MTBE and ETBE. Silver plated terminals ensure the best electrical connection possible
along with an EV1 style connector for positive locking and vibration resistance.
Warranty terms
The use of this equipment must be in complete compliance within the terms set out in this manual, failure to do so excludes the manufacturer from
all responsibility.
This product is not certied for aeronautic purposes or any ying vehicles, as it has not been designed for such applications.
Before starting any electrical installation, disconnect the battery.
This product is not certied for aeronautic purposes or any ying vehicles, as it has not been designed for such applications.
In some countries where an annual inspection of vehicles is enforced, no modication in the OEM ECU is permitted. Be informed about local laws and
regulations prior to the product installation.
Important warning for proper installation of this product:
Always remove and insulate unused wires. NEVER roll up excess wiring as this may create an antenna that
captures electromagnetic interference that may generate product malfunction.

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Limited warranty
This product warranty is limited to 90 days from the purchase date, only covering manufacturing defects and requiring purchase invoice presentation.
Any disassembly of the unit or removal or replacement of any internal component of the unit will void the product warranty and render the unit ineligible
for service.
Damage caused by disassembly or misuse of the unit will not be covered by the warranty. Warranty will be void unless repair is done exclusively by
FuelTech warranty department.
Manual Version 1.2 – June/2023
Characteristics
Compatible with any kind of fuel, including:
- Gasoline
- Ethanol
- Methanol
- Nitromethane
- Nitropropane
- MTBE/ETBE
Electrical specications
- High impedance
- Coil resistance: (8.2 - 8.1) Ohms
- Ingress protection Rating: IP67 / NEMA6

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Dimensions mm (in)
1 - Overall height - 74 mm (2.91”)
2 - Overall width - 18 mm (0.71”)
3 - Top O-ring diameter - 14.58 mm (0.57”)
4 - Tip - 4.1 mm (0.16”)
5 - Bottom O-ring diameter - 12.83 mm (0.51”)
Installation
Electrical
- Pin 1: 12V to 24V switched power (never wire to constant power, this will damage the injector)
- Pin 2: ECU injector output (Blue outputs)
Electrical with Peak and Hold
Use the Peak and Hold is mandatory when to use injectors in gray and yellow outputs. In this case its necessary
to install a Peak and Hold 8A/2A. See Peak and Hold manual’s for more information.
Testing your injectors before rst startup
- Go to the outputs screen under the sensors and calibration menu in FTManager software
- Setup each injector output, write map to ECU
- Once the outputs are set, you can power the ECU up and click on the lightning bolt button near each injector output. The injectors will pulse when
the test button is pressed. Test each injector to ensure correct functionality, and to make sure they’re on the correct cylinder and rail according
to your selection.

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If your injectors are not working use the diagnostic
guide below
- Check all fuses related to injector power
- Check to make sure all relays related to injectors are energized
- Check for power at the injector connector with a voltmeter or
LED test light
- Check the injector output from your ECU with a noid light set or
LED test light
- Make sure either your peak and hold driver or jumper is plugged
in if using a FuelTech terminated harness
- Check for power and ground at your peak and hold module
Fuel injector installation
O-ring style injectors
a. Lube the upper and lower o ring with petroleum jelly or ATF
b. Press the bottom of the injector into your intake manifold injector
bung
c. Align all injectors and press the fuel rail onto the top of the injector
ensuring all of the o rings are intact and seated properly
IMPORTANT
Once installed, pressurize the system to inspect
for leaks before starting
NOTE
In some cases, it will be necessary to increase the diameter of the injector tting holes in the intake manifold.

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10 Volts 11 Volts 12 Volts 13 Volts 14 Volts 15 Volts 16 Volts 18 Volts 20 Volts
0.510 0.270 0.160 0.000 -0.110 -0,270 -0,310 -0.325 -0.335
Conguration
Navigate to engine settings on the quick access panel.
a. Click Fuel injection
b. Enter your total ow by adding your injectors together
Example: 170lb/h x 4 cylinders = 680
c. Enter your primary injector dead time
Battery voltage compensation
Next step is on battery voltage compensation in fuel tables.

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Base fuel pressure (differential)
The recommended base fuel is 43.5PSI, this allows a better fuel atomization in the combustion chamber.
Execute the following steps to regulate it:
a. Disconnect the fuel regulator vacuum hose
b. Rev the engine up to 3000RPM steady
c. Regulate the base fuel pressure at 43.5PSI or desired pressure, making sure to have a stable number
IMPORTANT
It’s not recommended use more than 120PSI of differential fuel pressure, this will damage the injectors
Battery
voltage
(V)
Fuel pressure PSI - (BAR) - 170 lb/h
30 (2.1) 40 (2.8) 43.5 (3) 50 (3.4) 60 (4.1) 70 (4.8) 80 (5.5) 90 (6.2) 100 (6.9)
10 1.42 1.50 1.53 1.58 1.65 1.80 1.94 2.10 2.25
12 1.11 1.20 1.24 1.28 1.33 1.38 1.44 1.53 1.60
13 0.99 1.04 1.08 1.12 1.22 1.30 1.36 1.42 1.48
14 0.94 0.99 1.04 1.06 1.17 1.19 1.23 1.28 1.32
16 0.81 0.84 0.86 0.90 0.95 0.97 1.02 1.06 1.08
Injection time (ms)

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Horsepower vs Injector size
170 lb/h Injectors
43.5 PSI fuelpressure differential (HP)
Power 4 injectors 6 injectors 8 injectors
Ethanol 639 957 1277
Gasoline 894 1341 1788
Methanol 426 639 851
Max ow vs Pressure
Injectors are a volume ow device, This means it ows a certain volume of uid through it at whatever differential pressure you currently have over a
certain amount of time.
Example: cc/min (Cubic Centimeters per minute) or GPM (gallons per minute)
However Injectors are often talked about and displayed in pounds per hour. In Order to accurately dene this you need to know the density of the uid
you intend on owing through them. Below is some simple math on how this is done.
First you must know the specic gravity of the uid you will be owing through your injector. And then you need to know how many grams are in 1
pound (453.592)
Example: 0.72 grams per cubic centimeter or 720 kilograms per cubic meter.
Now you multiply your cc/min ow rate by the specic gravity then divide it by how many grams are in one pound and multiply by 60 to convert from
minutes to hours. Here is how that would calculate out below: (1785cc/min × 0.72 ÷ 453.592) × 60 = 170.003 Pounds Per Hour
If you change to a uid with a different density you need to do the calculation with the specic gravity of that new uid.
Now that we know how it’s calculated, here are some of the more popular fuels used in the racing industry.

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PSI BAR cc/min GPM lb/h
30 2.1 1491 0.394 142.002
35 2.4 1617 0.427 154.003
40 2.8 1711 0.452 162.955
43.5 31785 0.472 170.003
45 3.1 1858 0.491 176.955
50 3.4 1932 0.510 184.003
55 3.8 2079 0.549 198.003
60 4.1 2142 0.566 204.003
65 4.5 2236 0.591 212.956
70 4.8 2331 0.616 222.004
75 5.1 2415 0.638 230.004
80 5.5 2499 0.660 238.004
85 5.8 2593 0.685 246.957
90 6.2 2656 0.702 252.957
FT Injector 170 lb/h using VP Q16
* Fluid Specic gravity (0.72 g/cm3)
PSI BAR cc/min GPM lb/h
30 2.1 1491 0.394 140.523
35 2.4 1617 0.427 152.398
40 2.8 1711 0.452 161.258
43.5 31785 0.472 168.232
45 3.1 1858 0.491 175.112
50 3.4 1932 0.510 182.086
55 3.8 2079 0.549 195.941
60 4.1 2142 0.566 201.878
65 4.5 2236 0.591 210.738
70 4.8 2331 0.616 219.691
75 5.1 2415 0.638 227.608
80 5.5 2499 0.660 235.525
85 5.8 2593 0.685 244.384
90 6.2 2656 0.702 250.322
FT Injector 170 lb/h using VP C23
* Fluid Specic gravity (0.7125 g/cm3)