Injectors: Low Vs. High Imp - The Saab Link Forums

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Old 08-11-2007, 06:28 AM   #1
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Injectors: Low Vs. High Imp

With injectors being available on this sites classifieds and plethora of them on Ebay, I don;t know what can and can't be used.

Is Impedance a factor?

Some sellers say they have low impedance and some say high.

I know our Saab's use low, but will high work?

I'll bring some Canadian beer to the first Soc-going person to answer....
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Old 08-11-2007, 10:24 AM   #2
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Well you get higher injector temperatures with a high impedance injector. Not sure if this would cause any issues.
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Old 08-11-2007, 12:07 PM   #3
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Low impedance injectors are faster and draw more current.

It's like speakers. Swapping high to low can overheat/smoke the drivers because they'll pass more power and generate more heat than expected. It would be like taking two 4 ohm speakers and wiring them in parallel (for a 2 ohm load) and then blowing your amplifier because it's only rated for a 4 ohm load.

Swapping low to high probably won't wreck anything. I've never tried it, but my guess is that it would probably work. Somebody correct me if I'm wrong.
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First T7 19T turbo setup. First T7 Deka 80lb. injector setup.
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Old 08-11-2007, 01:47 PM   #4
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You'd just have to have the software to match I'd assume. Someone who knows more about the saab electrical system will have to answer this one.



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Old 08-11-2007, 09:00 PM   #5
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FYI, Saabs use High impedance, not low. If you tried to run low impedance injectors on an ECU designed to run high, you would blow the injector driver and have an ECU paperweight. you CAN wire in resistors inline with the low impedance injectors to get the correct ohm range (assuming you know what you are doing). Volvo did this from the factory on their LH 2.2 turbo cars! odd but true.
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Old 08-12-2007, 02:39 PM   #6
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DeLorean (and some crew from Central) are the beer weiners

Going to SOC?
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Old 08-12-2007, 02:53 PM   #7
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