I know that it is typically not recommended, but the reliability of such a swap would depended on the way the drive circuitry is set up.

Thus, I was wondering if anyone has actually done it and how it turned out.

Thanks,
Jason

 

I believe you can do it if you remove the resistor pack.

 

Just remove the resistor pack. Done.

Very very simple.


If you're going the other way around, you just have to add a 10ohm resistor per injector.

 

Yes, I know that is how it is done. However, in most cars, it is strongly discouraged because the drive circuitry for the two types is different.

Have any of you actually done it and had reliably success?

From what I have been told, LI injectors are typically “Peak and Hold” type injectors. That is the ECU will send full current to open them and then cut the power back (by as much as 75%) just enough to keep them open. The resistor in line is typically to reduce “Flyback current”, which is a large current spike produced by the injector as it closes.

HI injectors are typically not “Peak and Hold” type. So, if you put a HI injector in a car made for LI injectors, the injector will open during the “peak” but then close during the “hold”. So your duty cycle will be close to 0%.

Do I have this all wrong?

 

ttt