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Helper injector controller...?

Old 01-05-2008, 04:54 AM
  #1  
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Default Helper injector controller...?

Does anyone know where I could find a controller for a helper injector? Basically I need a device that monitors boost pressure and controls an added injector accordingly. I've heard of them, read about them before, etc. but can't seem to find one now. I was searching around and found this, http://www.dune-buggy.com/turbo/carbureted.htm, which describes it a little better and mentions one (bottom of the page), but it has since been discontinued. Also, I toyed with the idea of chipping an existing ecu (I think I have a couple pm6's, which I think can be chipped, and I know I have a pw0 which I know can be chipped) to do basically that... Simply take a reading from a MAP sensor and control the injector. Maybe even take a reading from an o2 sensor and adjust accordingly as an added bonus. This will (eventually) be for a carb'd and turbo'd application. I've been slowly piecing things together for a while now.
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Old 01-13-2008, 11:55 PM
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Default Re: Helper injector controller...?

Originally Posted by the_visualist
Does anyone know where I could find a controller for a helper injector? Basically I need a device that monitors boost pressure and controls an added injector accordingly. I've heard of them, read about them before, etc. but can't seem to find one now. I was searching around and found this, http://www.dune-buggy.com/turbo/carbureted.htm, which describes it a little better and mentions one (bottom of the page), but it has since been discontinued. Also, I toyed with the idea of chipping an existing ecu (I think I have a couple pm6's, which I think can be chipped, and I know I have a pw0 which I know can be chipped) to do basically that... Simply take a reading from a MAP sensor and control the injector. Maybe even take a reading from an o2 sensor and adjust accordingly as an added bonus. This will (eventually) be for a carb'd and turbo'd application. I've been slowly piecing things together for a while now.
The term you're looking for for ghetto simple is: "hobbs switch" - IE a boost activated switch.

What you want is an injector controller that uses wideband feedback to tune to a specific A/F, but ONLY when in boost. Try megasquirt, even the v2.2 will do it just fine.


IF you're staying carb'd - just blow through or draw through. Neither needs an additional injector if jetted right.
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Old 01-17-2008, 12:14 AM
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Default Re: Helper injector controller...?

Originally Posted by dcg9381
The term you're looking for for ghetto simple is: "hobbs switch" - IE a boost activated switch.

What you want is an injector controller that uses wideband feedback to tune to a specific A/F, but ONLY when in boost. Try megasquirt, even the v2.2 will do it just fine.


IF you're staying carb'd - just blow through or draw through. Neither needs an additional injector if jetted right.
Yeah, it was a stupid question, lol. I'll go standalone eventually, but I haven't even gotten the project started yet. Lots of other things I gotta deal with first. Thx though
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Old 01-17-2008, 01:19 AM
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Default Re: Helper injector controller...?

uh are you jsut wanting to turn on something like a sprayer, or a cold-start injector? then use a pressure(hobbs) switch.
otherwise you want something that will actually control an injector, which there are abunch of. SMT-6, AIC's of all natures, etc.
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