Anyone care to guess...

[VetteVet]

Oh, I almost forgot. Built in transmission controller with the ability to handle most of the GM electronic transmissions out there.

PCM with your tune burned in can be had for about $110.00.

[XfireZ51]

Jep,

Good luck. This would be cool. Let me know if I can help.

[GOLDCYLON]

Wow just wow. This is the way forward. OBD2 ='s bluetooth wireless scanning and tuning on the fly capabilities as possibilities reguardless of the platform.

GL Jep !!!!!

[alwayscode390]

Originally Posted by VetteVet

PCM with your tune burned in can be had for about $110.00.

It would be a direct replacement for the obd1 computers wiring and everything? ---

[XfireZ51]

Originally Posted by alwayscode390

It would be a direct replacement for the obd1 computers wiring and everything? ---

Nothing is a "direct replacement" other than another OEM ECM. You need to re-pin and "translate" your current calibration into the
parameters used by the LSx PCM. For stock motors that could be done and copied for other stock motors. Otrherwise each is a custom tune.
Having said that, thank you Jep for blazing the trail.

[alwayscode390]

The chip/ tune part you mentioned makes sense... but I wasn't sure about the actual wiring harness from the computer to the engine. ---

[VetteVet]

Originally Posted by XfireZ51

Nothing is a "direct replacement" other than another OEM ECM. You need to re-pin and "translate" your current calibration into the
parameters used by the LSx PCM. For stock motors that could be done and copied for other stock motors. Otrherwise each is a custom tune.
Having said that, thank you Jep for blazing the trail.

Well said, Dom.

I'm working with a spare harness right now. Here is the plan:

1. Finish re-pinning and adding the needed additional wiring.
2. Burn a compatible stock tune into the PCM.
3. Hook up the modified harness to my spare set of LT5 sensors.
4. Hook up engine harness to my car and power up.
5. Use a signal generator to provide crank, cam and speed signals to PCM.
5. Scan the PCM to make sure that I'm getting rational values and outputs are being triggered correctly.
6. Check functionality of my solution to the PCM/CCM communication problem.
7. If all is good to this point, I will install the crank reluctor and sensor and replace the harness/ECM on my car with the modified harness/411 PCM. Plan is also to run COP pencil coils(smart ones).
8. Modify the stock tune with values that should get the engine up and running reasonably well.
9. Tune as required to get engine running well on primaries only.
10. Install custom PCM operating system to allow control of secondaries.
11. Tune secondary maps.
12. If all is well to this point, finalize and install cam sensor solution to allow for misfire detection. FYI, the 411 PCM is sophisticated enough to run perfectly with no cam sensor. No cam sensor only results in slightly longer crank times(may take one revolution instead of 30 degrees). It does not resort to firing of injectors or coils in pairs or anything like that. The ONLY thing lost without a cam sensor is misfire detection.

All of this is based on stuff from the internet....and you know that they can't put it on the internet if it's not true.

Jep

[VetteVet]

It looks like I may have sourced the COP ignition coils. They are a very good fit. The ridged seal is a snug fit in the spark plug hole and the length is almost right on the money. They are smart coils, so there should be no problem controlling them with the LS1 PCM.







I'm going to pick one up(I borrowed this one) and verify that the PCM can control it.

Jep

[XfireZ51]

Jep,

Very cool. What are they off of? GM? Am I looking at 3 or 4 pins?

[Blue Flame Restorations]

Originally Posted by VetteVet

Well said, Dom.

I'm working with a spare harness right now. Here is the plan:

1. Finish re-pinning and adding the needed additional wiring.
2. Burn a compatible stock tune into the PCM.
3. Hook up the modified harness to my spare set of LT5 sensors.
4. Hook up engine harness to my car and power up.
5. Use a signal generator to provide crank, cam and speed signals to PCM.
5. Scan the PCM to make sure that I'm getting rational values and outputs are being triggered correctly.
6. Check functionality of my solution to the PCM/CCM communication problem.
7. If all is good to this point, I will install the crank reluctor and sensor and replace the harness/ECM on my car with the modified harness/411 PCM. Plan is also to run COP pencil coils(smart ones).
8. Modify the stock tune with values that should get the engine up and running reasonably well.
9. Tune as required to get engine running well on primaries only.
10. Install custom PCM operating system to allow control of secondaries.
11. Tune secondary maps.
12. If all is well to this point, finalize and install cam sensor solution to allow for misfire detection. FYI, the 411 PCM is sophisticated enough to run perfectly with no cam sensor. No cam sensor only results in slightly longer crank times(may take one revolution instead of 30 degrees). It does not resort to firing of injectors or coils in pairs or anything like that. The ONLY thing lost without a cam sensor is misfire detection.

All of this is based on stuff from the internet....and you know that they can't put it on the internet if it's not true.

Jep

Jep, just stay away form the French models! LOL