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High or low impedance injectors??

PSIKO

By PSIKO,
in Engines & Forced Induction

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PSIKO Mentor

PSIKO

Posted
Posted

Ok, to work in conjunction with an aftermarket ems when upgrading injectors, is it better to run high, or low impedance injectors?

That is, either stick with the high impedence injectors on my sr20det and get larger ones from an s15 (relate to r33 injector setup), or should I get a fuel rail made up and run some low impedance injectors?

The reason I ask is because, if it's a lower impedance, then less resistance and therefore obviously higher current - therefore is it safe to assume that the injectors would operate a lot faster?

Or is this only the case in BIG horsepower engines, and not something I should worry about?

Cheers

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Sydneykid Grand Master

Sydneykid

Posted
Posted

Hi PSIKO, never seen any evidence of hi or low impedance injectors being better or faster. It is the fuel feed system that matters, side feed injectors are way more expensive to buy, so we like to change to top feed.

Hope that helps.

PSIKO Mentor

PSIKO

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Posted

well apparently this is so, but when you don't run any form of aftermarket management that can determine it, they all run under the same resistance and therefore same properties

later on you can set it so that the injectors open faster (more current, lower resistance) and upgrade the springs so that the injectors close quicker (needed with higher hp and rev's bla bla)

but basically for my needs, its irrelevant which I go for, only depends on how much I want to pay, and whether I intend to upgrade later (back-fed better for this)

therefore back-fed (top-feed) is what I'm going for :P

Steve Grand Master

Steve

Posted
Posted
Originally posted by PSIKO

injectors open faster (more current, lower resistance)  

Would like to know how this works. My (limited) understanding is that electricity travels at the speed of light, and if you up the current to a circuit designed to operate at a specific amperage, all you do is risk doing damage.?????

anyone thow some light on this for me?

Cheers

Steve

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