efi

  1. T

    Won't start with out gas compression

    88 k2500 Scottsdale with a 350 small in it Headers (long tube), y-pipe, no O2 connected, upgraded thermostat (185°), new water pump, starter, spark plugs, and serpentine belt. Went to go start my truck today and it wouldn't turn over, I thought it was because of the cold weather but I let it...
  2. M

    Edelbrock proflo 4 on 5.7 vortec

    So I’m debating on getting the edelbrock proflo 4 for my truck which has the 5.7 vortec and I was wondering potential downsides and issues that people have had doing this and if the kit I found on jegs performance is everything I need or if I need to buy extra hardware or parts thank you...
  3. JoeDurango

    1992 K1500 EFI Swap, Keeping cruise control

    Good afternoon, I've combed through the forums for a while and found no clear information so I apologize if its a repeat to some of you all. I have a 1992 K1500 silverado, 5.7 with the 700r4, AC, Cruise. I am doing the ACES fuel injection swap (JOKER MULTIPORT Fuel injection) This is for long...
  4. P

    1987 GMC TBI Crossroads decision time (upgrade stock tbi or aftermarket efi)

    Hello Group So i am a long time mechanic but newer to the tbi world but love the 87 GMC longbed i found. So my current situation is i had a 383 stroker engine built for my truck (Stock heads with 3 angle valve job) mild performance cam, new 383 crank, hyperuetrctic pistons 9.5 to 1 comp, etc...
  5. Amsterdamned96

    Mysterious “Made in USA” control-module? off of my ‘89 Accel EFI 454 (k3500)

    Dear gearheads and greasemonkeys, Can anyone help me identify this control-module? The adhesive with which it was potted has turned somewhat opague so i can’t tell from looking at the PCB. I’m assuming it’s a standalone transmission-controller as the earlier Accel ECUs were bare-bones. It was...
  6. 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...
  7. 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...
  8. 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...
  9. 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...
  10. 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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