Do I need a injector resistor box?
Why do I have a (injector) resistor pack (box) in my car? The resistor pack is installed to ‘fool’ your ECU into thinking it is driving high impedance injectors. Vehicles that have low impedance injectors AND resistor packs have ECUs that use a saturated signal to operate low impedance injectors.
How do I know if my injector is high or low impedance?
There are two main types of injectors: low impedance and high impedance. A low impedance injector will have a resistance of around 2.5 to 3 ohms, while a high impedance injector will fall somewhere around 12 ohms. Resistance can be measured with a multimeter across the injector’s electric terminals.
What is a injector resistor box?
A resistor box is nothing more than a simple device that steps down current between the ECU and fuel injectors. It’s also not terribly difficult to wire up.
What’s the difference between high impedance and low impedance fuel injectors?
High Impedance injectors usually measure 10-14 ohms. Low impedance injectors, on the other hand, use what’s called a peak-and-hold driver. “With a really large injector and higher fuel pressure, more current allows the injector to open faster and more consistently.” he tells us.
Are Injector Dynamics low impedance?
Print. All Injector Dynamics injectors are high impedance. If your car came with a low impedance injector and a resistor ‘box’, it will need to be bypassed. The wiring at the resistor box should have 1 more wire than the number of cylinders, 5 for a 4 cylinder, 7 for a 6 cylinder, etc.
What is the difference between EV6 and EV14 injectors?
The EV6 injector is nearly identical in height but the body of the fuel injector is narrower or “skinnier” when compared to the EV1 injector. The third style is the EV14 fuel injector. The EV14 injector is shorter than the EV1 and EV6 injectors and features a slim style body.
Are stock LS injectors high or low impedance?
high-impedance
All factory LS V8 engines use high-impedance injectors.
Why do we use resistance box?
The main application of the resistance box is to control the specific value of current to flow through the circuit. The construction of the box is simple and cheap. The resistance box is available in different designs. It is used for testing and designing the circuit in the laboratory.
What is a fuel pump relay?
The fuel pump relay is an electronic component that is found on virtually all vehicles equipped with an internal combustion engine. It is often found in the fuse box located in the engine bay and functions as the primary electronic switch that controls power to the fuel pump.
What is the difference between EV1 and EV6 injectors?
The EV6 fuel injectors replaced them in the next line of fuel injector evolution. The EV6 injector is nearly identical in height but the body of the fuel injector is narrower or “skinnier” when compared to the EV1 injector. The third style is the EV14 fuel injector.
How do I know what size injectors to use?
Injector Math: How to Calculate Optimum Fuel Injector Size
- Step 1: Determine Horsepower.
- Step 2: Determine Approximate BSFC (Brake-Specific Fuel Consumption)
- Engine Type BSFC Using Gasoline.
- Step 3: Determine Your Safe Duty Cycle.
- Step 4: Calculate Your Optimum Injector Size.
- Step 5: Fine-Tune the Flow.
What happens if you install low impedance injectors without a resistor pack?
When a low impedance injector is installed without a resistor pack, certain elements of the system are much more likely to get burned out, as the current will not be controlled properly.
What is the resistance of a fuel injector?
A low impedance injector will have a resistance of around 2.5 to 3 ohms, while a high impedance injector will fall somewhere around 12 ohms. Resistance can be measured with a multimeter across the injector’s electric terminals.
What is a high impedance injector?
The drive circuitry for high impedance injectors is quite simple and referred to as a saturated driver circuit. With low impedance injectors, you’re more likely to find them in larger, higher performance injectors.
Why do I need a resistor for an injector?
Basic/Much Over simplified reason you need resistors (or a driver box which I am not talking about here): Stock injectors and many injectors (about 950cc and less) are high ohm (high impedance), higher resistance require less current to operate and so the amp draw is much less (less heat), with no need for a resistor/s on the stock system.