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GTR Fuel Injectors

GTRman1992
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Oosh Veteran

Oosh

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Posted
resistor pack? please elaborate!

GTR's run low-impedance injectors, the ECU wants to drive high-impedance ones, so a resistor pask in between ups the impedance.

You can easily build one from JayCar 10W ceramic resistors for $10-20 depending on how neat you want it.

GTRgeoff Grand Master

GTRgeoff

Posted
Posted

The transistors in the ECU for RB20/25 are designed to drive injectors with an impedence of around 12-15 ohms. The GTR (and toyota 440cc injectors I have) are 3-5 ohm so 6 resistors are required to splice in between the power wire to the injectors and the injectors themselves. The ECU then switches to earth on the other side of the injector to operate the injector.

It may work for a while without the resistors, but the eventual result is fried ECU :P

Then you are able to get the injector timing and pulse width modified (with an aftermarket ECU like PFC) so the car won't un too rich

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  • 2 years later...
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