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  1. Calparts

    Changing resistance of fuel level sender

    I think I forgot to mention that in addition to converting the Miata fuel level sender to the GTO sender, the Miata cluster fuel gauge needed to continue to function. So basically we needed to splice the GTO PCM wire into the wire going from the Miata sender to Miata gauge. This presented...
  2. Calparts

    Changing resistance of fuel level sender

    We're still working on this and the vendor is helping us. It wasn't as simple as plug and play. We're going to modify the unit a little, per the vendor's instructions, and see if that works. Will update more... Yes, time is money. Combined with the additional benefits of an OTS item as...
  3. Calparts

    Changing resistance of fuel level sender

    I ended up ordering a conversion box that I found for $45. yes, the other parts could have cost less, but I would have also needed to sort the correct parts, build a waterproof/shockproof box, and figured out how to program/setup the parts. So I went the easy route. Of course I have yet to see...
  4. Calparts

    Changing resistance of fuel level sender

    Cool! I now have a couple of variables to work with: offset and mx. I don't know where those are used at this moment, but I'll research the above widgets and hopefully figure it out. Thanks! The expert video is hilarious!
  5. Calparts

    Changing resistance of fuel level sender

    Thanks, IRStuff. So something from here: https://www.arduino.cc/en/Products/Compare feeding into something from here: https://www.maximintegrated.com/en/pl_list.cfm/filter/dp That's getting a little beyond my skillset, but I can give it a try. Constraints: it's an auto application, so 12 volts...
  6. Calparts

    Changing resistance of fuel level sender

    Thanks, TurboEng. The full mark is most critical because of the evap purge valve. If it runs with a full tank, it will suck fluid into the evap system. No bueno. But yeah, most of the time the tank is empty, especially the way I drive.
  7. Calparts

    Changing resistance of fuel level sender

    Thanks, Greg. I'll go that route if I can't find an inexpensive solution for the entire range, and assuming the ECU is happy. If it continues to throw a code, I may need to find a complete solution. What about an adjustable potentiometer? Jon
  8. Calparts

    Changing resistance of fuel level sender

    I have already searched for solutions. I found this one, but it's expensive: http://www.yogisinc.com/index.cfm/page/ptype=results/category_id=3725/mode=cat/cat3725.htm
  9. Calparts

    Changing resistance of fuel level sender

    Hi, I need to increase the resistance of the signal coming from the fuel level sender in a Miata going into the ECU of an LS2 engine. The Miata ranges from ~5 ohms (full) to ~115 ohms (empty). The LS ECU expects a range from 40 ohms (full) to 250 ohms (empty). Reading the full point is most...
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