Can i use high impedance injectors in a system designed for low impedance injectors?
I know the other way requires resistors but not too sure if this way will work...
As far as I understand, no. I dont think the injectors will open properly.
(unless of course the low impedance control system has resistors that you can easily bypass).
What project is this for? I imagine you have some spare S70 injectors that you are planning something fun with :-)
My 164 is running an older efi system that uses low impedance injectors, I am currently using bosch 380cc 024 injectors (stock 164) I want to upgrade them to a set of later bosch green (440cc) injectors but these are high impedance. I can easily make up the hardware to allow them to fit but don't know if it will actually work.
I have found information on the internets that suggest they may work but nothing that instills a great amount of confidence..
There is too much work involved in setting up the hardware to do it on the off chance it will work.. I want to be sure first..
The dwell (dead) time of the bosch (e.g. green) injectors is very dependent on voltage. In other words, if the voltage is low, the injectors will take a longer time to open, and will not be able to be run at full capacity. So, even if the 164 can open and close the injectors properly (which I am not sure of), you may get weird problems re dead time. On a related topic, you should probably compare the dead/dwell times of the new and old injectors to make sure they are not way off each other.
if you remove the resistors you can use high impedance injectors in the system (assuming 740/940 turbo)
Its for his 164 Mike ;) but the 740t thing is a good example.
Maybe run browntops or similar instead Rob?
You have to delete the resistors. After that it should be no problem. You're effectively moving the resistance from the ballast to the injector itself.
I don't know that there are resistors to delete.. I shall investigate.
There has to be ballast somewhere on the circuit!