efi

  1. Obsjaxon

    Thermostat gauge bouncing

    99 Tahoe: Thermostat gauge rapidly rises as soon as i get over 90kmh.I let off and can watch it go back to where it normally sits. It doesn’t seem to have a coolant leak and is topped up and im not sure if it was actually hot when the gauge rose but im thinking its the gauge itself that's the...
  2. U

    TBI or EFI options

    So the story is, I’m planning on building a 383 stroker. I have a regular cab short bed k1500 1990 with TBI 350 and 5 speed manual. Planning on swapping to a nv4500 so my tranny will hold up. Going carbureted is out of the question so what are my options for a reliable TBI or EFI setup. I’m...
  3. H

    ECU tuning platform general question

    Hi, part-time lurker, first time poster here. I've already learned a lot from these forums, thanks to everyone. I have a very general and maybe silly question about ECU tuning platforms: How do companies like EFI Live and HP Tuners get the information for the vehicles they support? Or, what's...
  4. S

    obd1 issues

    hello all i am brand new to the gmt400 scene. i bought the truck and decided to do an engine swap. the new motor is a 355 sbc with a holley sniper efi system that is stand alone. i went with a th350 so i dont need to have the ecu trying to shift the truck and freaking out. i want to use the...
  5. A

    93 3500 Regular Cab - 502/Accel-Ram Swap

    DISCLAIMER: I've previously stated the truck came with a 502 Ram-Jet. This was a newbie mistake of me and it's an Accel DFI not a Ram-Jet. Note however that this Accel is also called/labeled "RAM" which is what caused the confusion to begin with. So to begin my build thread I'd like to clarify...

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