Let's talk 1985 ECM replacement...
Thread Starter
Burning Brakes
Joined: Nov 2000
Posts: 986
Likes: 487
Let's talk 1985 ECM replacement...
I hear the 1985 ecm is not so good because of low communication rate (160 baud?) and the inability to monitor data without the act of monitoring it changing the information presented.
1. Are these things true?
2. If so, which years are better?
3. Are those years direct plug and play? No monkey business moving wires around in connectors and such?
1. Are these things true?
2. If so, which years are better?
3. Are those years direct plug and play? No monkey business moving wires around in connectors and such?
Drifting
Joined: Dec 2000
Posts: 1,785
Likes: 91
From: Leander TX
1. Yes, this is true. It's much slower than the 86+ ECM.
2. If I wind up changing I'm going with https://www.dynamicefi.com/
3. No, nothing is plug and play without having to do wiring work.
What are you looking for? If the car is still fairly stock (minor bolt ons) the 85 is fine. If you are doing FI, Cam, engine swaps, etc then the 85 is limited. I just had mine tuned by TPIS for my ZZ4, miniram car. It runs pretty good. Not perfect but good. In the process I almost went with the Dynamic EFI as I was having some challenges getting my tune from TPIS. They had some issue with their software and hardware to do the tune which now require a different socket to be solder in if you go that route. I already know, that if I want to do any more tune work on the car I'm just going dynamic EFI as I want my dash to work properly but have a system that is easy to tune as well.
Only real other options is the 86+ ECU swap (takes the same work as the dynamic system so why bother IMHO) or go full stand alone.
2. If I wind up changing I'm going with https://www.dynamicefi.com/
3. No, nothing is plug and play without having to do wiring work.
What are you looking for? If the car is still fairly stock (minor bolt ons) the 85 is fine. If you are doing FI, Cam, engine swaps, etc then the 85 is limited. I just had mine tuned by TPIS for my ZZ4, miniram car. It runs pretty good. Not perfect but good. In the process I almost went with the Dynamic EFI as I was having some challenges getting my tune from TPIS. They had some issue with their software and hardware to do the tune which now require a different socket to be solder in if you go that route. I already know, that if I want to do any more tune work on the car I'm just going dynamic EFI as I want my dash to work properly but have a system that is easy to tune as well.
Only real other options is the 86+ ECU swap (takes the same work as the dynamic system so why bother IMHO) or go full stand alone.
Thread Starter
Burning Brakes
Joined: Nov 2000
Posts: 986
Likes: 487
1. Yes, this is true. It's much slower than the 86+ ECM.
2. If I wind up changing I'm going with https://www.dynamicefi.com/
3. No, nothing is plug and play without having to do wiring work.
What are you looking for? If the car is still fairly stock (minor bolt ons) the 85 is fine. If you are doing FI, Cam, engine swaps, etc then the 85 is limited. I just had mine tuned by TPIS for my ZZ4, miniram car. It runs pretty good. Not perfect but good. In the process I almost went with the Dynamic EFI as I was having some challenges getting my tune from TPIS. They had some issue with their software and hardware to do the tune which now require a different socket to be solder in if you go that route. I already know, that if I want to do any more tune work on the car I'm just going dynamic EFI as I want my dash to work properly but have a system that is easy to tune as well.
Only real other options is the 86+ ECU swap (takes the same work as the dynamic system so why bother IMHO) or go full stand alone.
2. If I wind up changing I'm going with https://www.dynamicefi.com/
3. No, nothing is plug and play without having to do wiring work.
What are you looking for? If the car is still fairly stock (minor bolt ons) the 85 is fine. If you are doing FI, Cam, engine swaps, etc then the 85 is limited. I just had mine tuned by TPIS for my ZZ4, miniram car. It runs pretty good. Not perfect but good. In the process I almost went with the Dynamic EFI as I was having some challenges getting my tune from TPIS. They had some issue with their software and hardware to do the tune which now require a different socket to be solder in if you go that route. I already know, that if I want to do any more tune work on the car I'm just going dynamic EFI as I want my dash to work properly but have a system that is easy to tune as well.
Only real other options is the 86+ ECU swap (takes the same work as the dynamic system so why bother IMHO) or go full stand alone.
