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Tech Area => General Buick Tech => Topic started by: Scoobum on April 12 2015, 04:21:14 PM

Title: Low Impedance 83's And A Stock ECM
Post by: Scoobum on April 12 2015, 04:21:14 PM

Dan has the old skool 83's in his car. The so called modded ECM he purchased is NFG. Tossed in a stock ECM to get him up and running. Can he cruise the car around or should he wait till he gets a modded ECM. Kinda hoping he can hit the track with me.

Title: Re: Low Impedance 83's And A Stock ECM
Post by: TexasT on April 12 2015, 08:26:53 PM

I was under the impression that you could burn up the drivers running low impedance injectors with high impedance drivers.

Title: Low Impedance 83's And A Stock ECM
Post by: Steve Wood on April 12 2015, 09:05:15 PM

I think it will work if he takes it easy so it does not pull too much current

Title: Re: Low Impedance 83's And A Stock ECM
Post by: Scoobum on April 13 2015, 01:01:55 AM

Thanks Steve. He's old like me so he just cruises it around town. If he smokes it at the track...then no worries. He has an electric winch on his trailer. :)

Title: Re: Low Impedance 83's And A Stock ECM
Post by: Steve Wood on April 13 2015, 09:26:27 AM

I have known a couple of guys that ran them a long time on a stock ecm

Title: Re: Low Impedance 83's And A Stock ECM
Post by: motorhead on April 13 2015, 11:13:32 AM

I added a large computer fan to my modded ECM case to deal with the heat.  I keep a spare modded ECM in the trunk.  If the drivers from the modded ECM are serviceable Bob Bailey can transfer them over to another known-good stock ECM - that's what I did after one of mine went poof!

EDIT: There are also converter boxes from companies like AEM that will allow you to use low-Z injectors with a high-Z ECM.

Title: Re: Low Impedance 83's And A Stock ECM
Post by: Scoobum on April 13 2015, 06:36:44 PM

Mike...ya' got a link from the convertor from AEM?

Title: Re: Low Impedance 83's And A Stock ECM
Post by: motorhead on April 14 2015, 11:04:52 AM

http://www.google.ca/search?q=aem+injector+impedance+converter&hl=en&sa=X&as_q=&nfpr=&spell=1&ei=GywtVfLIPIGfyASvpoG4Dw&ved=0CAoQvwU (http://www.google.ca/search?q=aem+injector+impedance+converter&hl=en&sa=X&as_q=&nfpr=&spell=1&ei=GywtVfLIPIGfyASvpoG4Dw&ved=0CAoQvwU)

Title: Re: Low Impedance 83's And A Stock ECM
Post by: daveismissing on April 14 2015, 02:55:56 PM

Quote from: motorhead on April 14 2015, 11:04:52 AM

http://www.google.ca/search?q=aem+injector+impedance+converter&hl=en&sa=X&as_q=&nfpr=&spell=1&ei=GywtVfLIPIGfyASvpoG4Dw&ved=0CAoQvwU (http://www.google.ca/search?q=aem+injector+impedance+converter&hl=en&sa=X&as_q=&nfpr=&spell=1&ei=GywtVfLIPIGfyASvpoG4Dw&ved=0CAoQvwU)

Makes high z injectors look cheap

Title: Re: Low Impedance 83's And A Stock ECM
Post by: motorhead on April 14 2015, 03:47:23 PM

LOL... you can also do it with 6-6.5ohm resistors in-line on the power wire, as I understand it.

Title: Re: Low Impedance 83's And A Stock ECM
Post by: Charlief1 on April 14 2015, 08:07:37 PM

Found something cheap that might be able to help you here. :rock:

http://www.superstreetonline.com/how-to/engine/htup-0804-honda-fuel-injectors-impedance-and-resistor-box/ (http://www.superstreetonline.com/how-to/engine/htup-0804-honda-fuel-injectors-impedance-and-resistor-box/)

Granted, this is for a 4 banger but there are 6 cylinder honda and other imports that may have a box on them as well.