please explain to me what a "peak and hold" injector is, and also "saturated"

I have an OBD1 integra, what kind of injectors would i need?

 

you can use either kind. If you use peak and hold injectors you will need to wire in a resistor box.

 

so whats the difference between the two, and what does my car come stock with?

 

Why dont you do some research and find out, that's what I did when I was nub.

 

PEAK-HOLD DRIVER A driver that uses two levels of current to operate the injector. The driver circuit applies battery voltage to the injector until a predetermined current level is reached. The current is then reduced and held at a lower level for the duration of the PW. This type of driver is normally used with injectors having low resistance coils (typically around 2 ohm). The accuracy of the driver peak current level (Ip) and the hold current level (Ih) is held to ±0.50%.

Advantages The high peak current minimizes OT response and the low hold current minimizes CT response. This method of control results in an increased linear range of injector operation.

DisadvantagesHeat is primarily dissipated at the driver. Circuitry is more complex than that of the saturated driver.

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SATURATED DRIVER A power transistor driver that turns fully on for the entire duration of the injector PW. This type of driver is used with injectors having high resistance coils (typically 12 to 16 ohm) or with
injectors having low resistance coils in combination with a ballast resistor.

Advantages Heat is primarily dissipated through the injector or ballast resistor and not at the driver circuit. Circuitry is simplified compared to the peak-hold driver.

Disadvantages The inherently slower dynamic response of this system decreases the injectors usable flow range. The Q of an injector used with this type of circuit is more duty cycle sensitive due to heat dissipation considerations. This drivers inductive suppression, which may be resistance, capacitance or zener, significantly affects the injectors Qd rates due to variations in the circuits current decay rate. This decay results in a change of the injectors closing time.

Just putting peak and hold on your (factory saturated injectors ) car still wont operate like a car with peak and hold injectors will from factory.

Peak and Hold are better. You need a resistor and a driver circuit to have it operate like peak and hold.



Modified by Jimmy Kudo at 7:11 PM 8/22/2004

 

If you got some cash or your saving up.

FJO has a peak and hold driver : http://fjoinc.com/PDFs/spec_sh...t.pdf

Also to combat the P&H resistor heat motec has resistors with heat sinks pretty well made I would say.

http://www.motec.com