I was told I can use High Impedance injectors on a car that is originally a low impedance style injector; I want to make sure this is correct? I have racetronix 37lb injectors coming in that are the 2 AMP connector style for pre-99 2.4 J-bodys that are HIGH impedance, however my stock injector is low impedance? Is there going to be issues and if so what?
I have heard strange stories of honda peeps short circuiting there ECU by using low impedance injectors on a high impedance system
All you would need to do is wire in resistors.
That what most honda people do, unless they are trying to short cut things.
Measure your stock impedance then measure your new injector impedance.
wire in a resistor so they will then be the same impedance!
High-Z can be used on a low-Z system as-is. (resonse time is a potential issue at VERY high RPM though).
You only need resistors to use low-Z injectors on a high-Z ECU.
fortune cookie say: better a delay than a disaster
OHV notec wrote:High-Z can be used on a low-Z system as-is. (resonse time is a potential issue at VERY high RPM though).
You only need resistors to use low-Z injectors on a high-Z ECU.
your saying i just plug em in huh. Can you give me some info to why its possible there different ohms after all, when you say very high rpm you refer to 8000+?
Fireshroom wrote:OHV notec wrote:High-Z can be used on a low-Z system as-is. (resonse time is a potential issue at VERY high RPM though).
You only need resistors to use low-Z injectors on a high-Z ECU.
your saying i just plug em in huh. Can you give me some info to why its possible there different ohms after all, when you say very high rpm you refer to 8000+?
I mean F1+ lol. Also, they aren't technically "ohms". It's impedence, not resistance; they just measure it in ohms for simple DC current analysis.
When using high impedence injectors, ECUs are designed with injector drivers meant for low current (I=V/Z). So, when you put in low-Z injectors, it can draw too much current and fry the drivers.
When designed for low-Z injectors, they use heavier-duty drivers, so they can handle more current. When you now put high-Z injectors in the system, the drivers can just "shrug it off".
However, there are some ECUs which come with high but can still handle low (I've seen some Hondas pull it off, and some go up in flames).
fortune cookie say: better a delay than a disaster
OHV notec wrote:Fireshroom wrote:OHV notec wrote:High-Z can be used on a low-Z system as-is. (resonse time is a potential issue at VERY high RPM though).
You only need resistors to use low-Z injectors on a high-Z ECU.
your saying i just plug em in huh. Can you give me some info to why its possible there different ohms after all, when you say very high rpm you refer to 8000+?
I mean F1+ lol. Also, they aren't technically "ohms". It's impedence, not resistance; they just measure it in ohms for simple DC current analysis.
When using high impedence injectors, ECUs are designed with injector drivers meant for low current (I=V/Z). So, when you put in low-Z injectors, it can draw too much current and fry the drivers.
When designed for low-Z injectors, they use heavier-duty drivers, so they can handle more current. When you now put high-Z injectors in the system, the drivers can just "shrug it off".
However, there are some ECUs which come with high but can still handle low (I've seen some Hondas pull it off, and some go up in flames).
this may be true, but don't think its plug and play.
better get someone with HPT to alter your injector constant so the larger injectors work properly.. the ecu needs to know the size in order to use them right
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DaFlyinSkwir(LS61) /PJ/ OEM+ wrote:OHV notec wrote:Fireshroom wrote:OHV notec wrote:High-Z can be used on a low-Z system as-is. (resonse time is a potential issue at VERY high RPM though).
You only need resistors to use low-Z injectors on a high-Z ECU.
your saying i just plug em in huh. Can you give me some info to why its possible there different ohms after all, when you say very high rpm you refer to 8000+?
I mean F1+ lol. Also, they aren't technically "ohms". It's impedence, not resistance; they just measure it in ohms for simple DC current analysis.
When using high impedence injectors, ECUs are designed with injector drivers meant for low current (I=V/Z). So, when you put in low-Z injectors, it can draw too much current and fry the drivers.
When designed for low-Z injectors, they use heavier-duty drivers, so they can handle more current. When you now put high-Z injectors in the system, the drivers can just "shrug it off".
However, there are some ECUs which come with high but can still handle low (I've seen some Hondas pull it off, and some go up in flames).
this may be true, but don't think its plug and play.
better get someone with HPT to alter your injector constant so the larger injectors work properly.. the ecu needs to know the size in order to use them right.
Yeah, I kind of assumed he wasn't a complete idiot since he had made it to the 'imedence' section of things...
fortune cookie say: better a delay than a disaster
lol i know im bringing this from the dead but a little confused . i have a set of accel 36lbs/hrs high impedance part number (150136) .my car is a 1997 cavalier 2.4 and which i know is low impedance. now what you all are saying is that the injectors i have the accel i can use those and it wont frie a driver in the ecu or anything like that ? im not going to use them right now or boost right now. im still waiting on the engine to get back to me from the machine shop .. and i picked these up a couple years ago dont know why lol . but let me know thanks !
you can use the High-Impedance injectors on a Low Impedance system. your good
cool cool i just didnt want to burn andything up and i have been trying to sell these, it never works out so i geuss this is why ... thanks so i geuss these will pretty much be plug an play .
