The Top DSM Community on the Web

For 1990-1999 Mitsubishi Eclipse, Eagle Talon, Plymouth Laser, and Galant VR-4 Owners. Log in to remove most ads.

  • Join the Community!

    DSMtuners is a massive archive of DSM information - but more importantly, it's a COMMUNITY! Join in and participate with other DSMers, and invite all of your DSM friends to make this place their home. Chat with others, create a build thread, post questions and answers. Get involved! Logging in will also remove many of the advertisements, along with this notice. ;) It will also allow you to view images in threads.

Please Support STM Tuned
Please Support STM Tuned
Laika

Latest activityPostingsVehiclesAbout

    • Laika
      Update:I thought about it a bit and decided to switch to using actual Bosch relays with flyback diodes. It's only necessary on the two relays that connect to ECU pins and it may even be overkill there but I'd rather be safe than sorry...
    • Laika
      In this guide I will be describing how I replaced the MPI relay for a 1990 Eclipse GSX with 3 Bosch-style relays. This approach is useful if you had a MPI relay go out and you don't want to pay over $100 for a new one or if you are worried about...
      • IMG_20220723_164440.jpg
      • mpi_pins.PNG
      • mpi_relay_bosch.png
    • Laika
      Just wanted to post an update for you guys - I decided to just go for it and test my idea for replacing the MPI relay with 3 bosch-style ones. Car started up and idled so it looks like it was successful. I'll be posting a guide on here soon...
    • Laika
      I saw that earlier too and suspect that the VR4 relays are different from the DSM ones since the pins are different from the 1G DSM one in the diagram they give. This makes me question relying on those resistance values they give too since I have...
    • Laika
      Getting another MPI relay is my backup plan but I'm going to try having three relays so one can be triggered by the fuel pump signal going to ground (MPI pin 7) and the other by the starter signal (MPI pin 9). I'll just have to pay attention that...
    • Laika
      That's a good note about the ECU MPI coil, thanks. I'm working on replacing the relay with universal ones, so I'm trying to make sure I'm getting relays that are going to work. Unfortunately only the starter fuel pump coil reads a reasonable...
    • Laika
      Thanks, I appreciate it!
    • Laika
      I was wondering if someone with a working 1G MPI relay could do me a huge favor and test the coil resistances for me. It should be MPI pins 10+8, 3+7, and 9+6. Below is a diagram (from https://projectzerog.com/wiring_info.shtml) that shows the...
      • mpi_pins.PNG
  • Loading…
  • Loading…
  • Loading…
Support Vendors who Support the DSM Community
Boosted Fabrication ECM Tuning ExtremePSI Fuel Injector Clinic Jacks Transmissions JNZ Tuning Kiggly Racing Morrison Fabrications MyMitsubishiStore.com RixRacing RockAuto RTM Racing STM Tuned VR Speed Factory
Top