May 20, 2012, 10:37:58 AM
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Author Topic: Grounding your electronics  (Read 669 times)

citymunky

  • JACKAL Owner
  • *
  • Posts: 58
    • 1991
    • Galant VR-4
    • Motor: 4G63 2.0L
    • Head: 1G (large ports)
Grounding your electronics
« on: January 28, 2011, 09:17:13 AM »
So after I installed my Innovate Motorsports LC-1 wideband I was having issues with it reading AFR. After reading a little of Innovate forums, I found bad grounding can cause major issues.


Quote from: Innovate Motorsports
In wiring the electrical system in a car the best way is to run separate ground wires from each system to a common ground point. The common ground point should NOT be just a bolt where lugs from each device are stacked in top of each other. The contact patches between the lugs create their own resistance and ground problems. The very best way is to bolt a short piece of copper bar near the battery to the frame. Connect the copper bar to the battery with a heavy duty ground strap. Drill and tap the bar for each ground return

http://innovatemotorsports.com/resources/electrical-grounding.php

One of there forum user post this as their copper bar, a distribution block and they said they had Dead accurate readings in my datalogger without having to play with any voltage or lambda offsets.



Yesterday I installed a 8 gauge wire from the ECU ground to my distribution block, Now my LC-1 with DB gauge/LED, GReddy gauges, Autometer Gauges and headunit are now grounded to my distribution block. I'm currently working on a 12 volt ACC power distribution block.
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'91 Galant VR-4 (923/2000). TD05H-20G, 2g 8.5:1 CR Pistons/ HKS 264 Exhaust Cam/1g head/1g Non-Turbo throttle body/1g intake manifold/2g exhaust manifold/Victory Performance 2.5" o2 housing/Tial 40mm WG w/ open dump/Pacesetter 1g 3" downpipe/3" high flow cat/3" catback/

Spectre22

  • JACKAL Owner
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  • Posts: 25
    • 1992
    • Eclipse GSX
    • Motor: 4G63 2.0L
    • Head: 1G (large ports)
    • Turbo: EVO III
Re: Grounding your electronics
« Reply #1 on: January 28, 2011, 12:02:51 PM »
Where did you have it grounded before? I just grounded to one of the computer grounds like the install said for the LC1 and i have not had any problems yet....
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92 GSX auto, Evo III 16g ported, DSMap, FP exaust manifold, Punishment racing Intercooler piping, Innovative LC1, Tubular o2 housing, 3" downpipe, Greddy BOV, FP 255 fuel pump, FIC 750cc injectors, AFPR set at 43psi

citymunky

  • JACKAL Owner
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  • Posts: 58
    • 1991
    • Galant VR-4
    • Motor: 4G63 2.0L
    • Head: 1G (large ports)
Re: Grounding your electronics
« Reply #2 on: January 29, 2011, 10:48:34 AM »
Computer grounds? Anyway I ground it to the bare metal frame in the center console.
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'91 Galant VR-4 (923/2000). TD05H-20G, 2g 8.5:1 CR Pistons/ HKS 264 Exhaust Cam/1g head/1g Non-Turbo throttle body/1g intake manifold/2g exhaust manifold/Victory Performance 2.5" o2 housing/Tial 40mm WG w/ open dump/Pacesetter 1g 3" downpipe/3" high flow cat/3" catback/

tragdor

  • JACKAL Owner
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  • Posts: 39
    • 1993
    • Talon TSI AWD
    • Motor: 4G63 2.0L
    • Head: 1G (large ports)
    • Turbo: S16G
Re: Grounding your electronics
« Reply #3 on: January 29, 2011, 12:05:10 PM »
^^That's where I have my LC1 and my radio grounded to.  Works fine for me.
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1gb TSi | S16g at 17psi | 255lph Walbro with STM rewire | Cryo treated slotted RotorPros w/Hawk HPS pads | VRSF front mount intercooler | Jackal powered

themadcheshire

  • WEREWOLF Owner
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  • Posts: 11
    • 1992
    • Talon TSI AWD
    • Motor: 4G63 2.0L
    • Head: 1G (large ports)
    • Turbo: 14b
Re: Grounding your electronics
« Reply #4 on: February 14, 2011, 10:31:37 PM »
I do believe I have my JAW grounded to a cpu ground and have no problems other than the initial free air calibration which anyone who has a JAW will tell you, sucks to set up. Been working flawlessly since and I run my wideband 24/7 although the talon sees about 200 miles a month
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In order to make this work, I have to change 2 things;  one of them is the Laws of Physics.  Dammit..

1992 tsi awd, Jackal, JAW, FMIC, 680cc, 3 inch turbo back, 255 walbro, comp clutch and lightweight flywheel,  aem truboost, cyclone manifold.

Kapok6

  • WEREWOLF Owner
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  • Posts: 283
  • 'ello poppet
    • 1991
    • Talon TSI AWD
    • Motor: 4G63 2.0L
    • Head: 2G (small ports)
    • Turbo: FP3065
Re: Grounding your electronics
« Reply #5 on: February 15, 2011, 07:55:50 AM »
Quote from: tragdor on January 29, 2011, 12:05:10 PM
^^That's where I have my LC1 and my radio grounded to.  Works fine for me.

+1, that's where I gorunded all my stuff.

Where is the computer ground located?
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1991 Eagle Talon TSi AWD-Ross 8:3.1 pistons, Eagle rods, ACL Race bearings, 2g small port head, HKS/Delta 272 cams, Evo springs/retainers, FP3065 @ 28psi (hopefully), FIC 1550's, Apex'i N1 turbo back exhaust, KYB GR-2's on Suspension Technnique springs, megan sturt bars, poly mounts/bushings

big_d

  • JACKAL Owner
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    • 1990
    • Talon TSI AWD
    • Motor: 4G63 2.0L
    • Head: 1G (large ports)
    • Turbo: WH1C
Re: Grounding your electronics
« Reply #6 on: February 15, 2011, 10:32:35 PM »
Passenger side of the center console...below the radio at the carpet. I'm sure you've seen it when you remove the ecu.
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Kapok6

  • WEREWOLF Owner
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  • Posts: 283
  • 'ello poppet
    • 1991
    • Talon TSI AWD
    • Motor: 4G63 2.0L
    • Head: 2G (small ports)
    • Turbo: FP3065
Re: Grounding your electronics
« Reply #7 on: February 16, 2011, 10:02:24 AM »
Yup.  Thats where I grounded my LC-1 setup on my last car.

Would ground somewhere on the engine block be a better idea?
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1991 Eagle Talon TSi AWD-Ross 8:3.1 pistons, Eagle rods, ACL Race bearings, 2g small port head, HKS/Delta 272 cams, Evo springs/retainers, FP3065 @ 28psi (hopefully), FIC 1550's, Apex'i N1 turbo back exhaust, KYB GR-2's on Suspension Technnique springs, megan sturt bars, poly mounts/bushings
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