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Posted

can the link ecu which runs high impedance injectors as standard

 

can i add in a resistor in line to bring up the value to run these low impedance injectors as requiring 650cc instead of 440cc as going to running a garrett gt2860rs turbo shortly

Posted

what i mean the standard injectors are high impedance and i want to run these low impedance injectors as they are the correct size for what i need

 

can i add in a resistor to increase the value to the same as high inpedance injectors and will the ecu drivers be ok with it

Posted

Yes low impedance can be used if a ballast resistor pack is used.

A typical low impedance injector of around 3ohms will require a 4.7ohm ballast resistor per injector.

Posted

25w would be recommended

Note the ballast is setting the peak current to the injector not matching the total resistance.

Posted

just to clarify

 

each injector has a common 12v feed and each switch wire goes back to the ecu

 

do i need 4 of these resistors, one wired in series onto the switch wire

 

Posted

You need one resistor per injector wired to be in series with the injector.

It can be on the power supply or ECU side of the injector.

  • 1 month later...
Posted

right thats the manifold and wiring sorted

 

added in 25 watt 4R7 ohm resistor into the system, the orginal injectors were 11 ohms and new injectors are 3.1 ohm with a 4R7ohm  25 watt resistor

 

with this set up will the injector outputs on the ecu be able to run this quite happily

Posted

Hi Neil,

Our documentation specifies a 4R7 Ohm ballast resistor for a 3.1 Ohm injector. Above Simon recommended a 25 Watt resistor. It looks to me that you have this right. When you wire each injector put the ballast resistor between the 14V supply and the injector.

Scott

Posted

thats done, thats how i wired it and had to modify the engine loom to do it as a common feed to each injector, now single feed to the ballast packs then indivialfeeds to each injector

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