2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

750cc Injectors, High impedance in my s4 t2..

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Old Mar 6, 2013 | 08:22 PM
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M.C. Language's Avatar
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750cc Injectors, High impedance in my s4 t2..

im finding it hard to find Low impedance injectors these days,, Can someone point me in the right direction... Or answer this question.. Can i run high impedance injectors in my low impedance car? rc enginering is telling me they will work just fine... Will they?? id rather take advice from people who arent trying to sell me injectors
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Old Mar 6, 2013 | 08:24 PM
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You can, since there is a resistor box that makes them high impedance anyways. Just short around the resistor box and use the high impedance injectors.
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Old Mar 6, 2013 | 08:57 PM
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would it mess with **** if i leave the low impedance primaries running of the resistor box and by pass on the secondaries?? i dont really wanna ghetto rig my car up, any opionion?
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Old Mar 6, 2013 | 09:16 PM
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I don't see a problem. The idea is to limit the current the ECU drivers have to handle. Use Ohm's law and it becomes apparent. I=V/R, so as the resistance (R) goes up, the voltage stays constant, and the current (I) goes down. The drivers in the ECU are little transistors, and you don't want to overload them. So long as you have some sort of way to limit the current, be it low impedance injectors with resistors, or high impedance injectors, you'll be fine. A mix of both is fine, but make sure you short out the right resistors!
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