Aftermarket ECU
Thread Starter
Racer
Joined: Sep 2017
Posts: 452
Likes: 55
From: Marianna Fl
Aftermarket ECU
I have a question for all those who have replaced or removed the ECU on a C4. What did you do about the security input for the CCM? I rewired the fuel enable relay but would like to stop the dash from flashing at me as I drive.
Drifting
Joined: Jun 2020
Posts: 1,680
Likes: 722
From: Stay dangerous my friends
If it's a nuisance, remove the light bulb.
I'm responding as I see that there haven't been many answers for what you were asking. I cant's answer your question directly because althought I have installed a Holley EFI and then later rewired 90% car, my 1986 did not have a BCM... so I didn't need to sort through any of those details. Assuming you are looking to keep the security system in tact... If you have a FSM section 8 has all of the details you need, I don't think you would need the wiring diagram even, but I haven't done the deed. If you don't have an FSM, look for the binder version as it's easier to manage and it's in color.
I'm responding as I see that there haven't been many answers for what you were asking. I cant's answer your question directly because althought I have installed a Holley EFI and then later rewired 90% car, my 1986 did not have a BCM... so I didn't need to sort through any of those details. Assuming you are looking to keep the security system in tact... If you have a FSM section 8 has all of the details you need, I don't think you would need the wiring diagram even, but I haven't done the deed. If you don't have an FSM, look for the binder version as it's easier to manage and it's in color.
Pro
Joined: Sep 2024
Posts: 526
Likes: 111
