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Haltech Are the settings for my injectors current correct on my E8

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Old Jan 24, 2013 | 05:09 PM
  #1  
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Are the settings for my injectors current correct on my E8

One injector driver on my E8 recently went out, I got a replacement ecu but I just want to make sure that I have the injectors setup correctly in the program.

The injectors in use and their resistance are as follows:

Primary 2X precision 1000cc P/H 2ohms
Secondary 2X bosch 1680cc P/H 5ohms

My current is set at : Injectors 1-6 = 5A/1.2A

Are these settings correct?
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Old Jan 25, 2013 | 10:08 AM
  #2  
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From: Floyds Knobs. IN
Was it driver 1 or 2 that failed? Guess that was the issue with why it just decided it didn't want to run one day?

The settings are outlined on page 44 of the manual. A 2 ohm injector is going to pull a peak of 6 amps with 12 volts. So, you need to choose the highest setting of 5/1.2. Now that is lower than the amp draw of the injector, especially considering the draw at a more likely 13.5 volts is going to be 6.75. But guys have been using these 2-3 ohm injectors with Haltechs for years and driver failures in the E8/11 are pretty uncommon. The E6X used to puke them out regularly, but not the E8/11. I don't have an official answer on whether it's ok, just experience of myself and a lot of others that have had good success with these injectors. I'd say if you have any doubt, fire an email off to Haltech and ask them. They're good at answering emails quickly or get them on the phone if you have to talk with them about your repair job anyway.

All of that said, you could pick up a pair of high ohm 1000cc injectors and swap in. Would be simple enough and would remove all doubt.
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Old Jan 25, 2013 | 01:38 PM
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Originally Posted by C. Ludwig
Was it driver 1 or 2 that failed? Guess that was the issue with why it just decided it didn't want to run one day?

The settings are outlined on page 44 of the manual. A 2 ohm injector is going to pull a peak of 6 amps with 12 volts. So, you need to choose the highest setting of 5/1.2. Now that is lower than the amp draw of the injector, especially considering the draw at a more likely 13.5 volts is going to be 6.75. But guys have been using these 2-3 ohm injectors with Haltechs for years and driver failures in the E8/11 are pretty uncommon. The E6X used to puke them out regularly, but not the E8/11. I don't have an official answer on whether it's ok, just experience of myself and a lot of others that have had good success with these injectors. I'd say if you have any doubt, fire an email off to Haltech and ask them. They're good at answering emails quickly or get them on the phone if you have to talk with them about your repair job anyway.

All of that said, you could pick up a pair of high ohm 1000cc injectors and swap in. Would be simple enough and would remove all doubt.
To simplify things, do you think I could put a resistor in-line (series) with each of my 2 ohm injectors.
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Old Jan 25, 2013 | 02:14 PM
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From: Floyds Knobs. IN
I'd consult with Haltech.
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Old Jan 26, 2013 | 09:02 PM
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I went ahead and installed a 1ohm 20Watt resistor in series with each of my 2ohm injectors. This now lessens the load on these drivers to 3ohms. I am not sure how this will affect my tune but I am surely keeping ane eye on it. I did email Haltech on the mater but have not gotten a response as yet.
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