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Join Date: Oct 2006
Location: Southern MA
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Originally Posted by ischmitz View Post
Inac, I think the bottom line is that the Carrera Motronic uses a peak&hold scheme to operate low-impedance injectors wired up in parallel. Once you use high-impedance versions you don't risk damaging things inside the DME. However, you might end up with lean conditions under load if for some reason the injectors do not stay open as long as the DME "commands" them to. As long as you use replacements that have similar dynamic characteristics and similar DC resistance you are probably O.K.

Hi Ingo,

I agree with you, Hi-Imp injectors will not damage the DME. I'm a EE by education and I reviewed the schematic with some other EE co-workers and we all agreed no harm in running Hi-Imp injectors.

But will they work as well as the stock Lo-Imp ones? that's another story and would need much testing.
1984 911 Carrera Cab M491 (Factory Wide Body)
1975 911S Targa (SOLD)
1964 356SC (SOLD)
1987 Ford Mustang LX 5.0 Convertible
Old 04-09-2008, 06:46 AM
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