Any progress on the OPTI alternative
09-30-2003, 05:38 AM
#61
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Join Date: Nov 1999
Location: East Petersburg, Pa, USA
Posts: 487
Originally posted by Injuneer
Driving 8 individual coils in direct fire requires a cam position signal. If you are going to run batch fire on a crank signal only, you will need to use the E'motive 4-coil setup, firing two cylinders simultaneously.
The LTCC is not a "replacement for the Opti". It is simply a device to drive 8 ignition channels from the stock PCM and the Opti low res signal.
Driving 8 individual coils in direct fire requires a cam position signal. If you are going to run batch fire on a crank signal only, you will need to use the E'motive 4-coil setup, firing two cylinders simultaneously.
The LTCC is not a "replacement for the Opti". It is simply a device to drive 8 ignition channels from the stock PCM and the Opti low res signal.
However, when I e-mailed Bob about it here's what he said:
The LTCC does not curently support a single crank sensor.
This is planned for a future upgrade.
Bob
09-30-2003, 05:40 AM
#62
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Join Date: Sep 2002
Location: Arlington, VA
Posts: 2,481
Originally posted by sseeya
Apparently I misunderstood how the LTCC works. I assumed it took the output signal from the PCM to the ignition control module and somehow converted it to drive the individual coils. Apparently it still needs the low res signal from the Opti.
However, when I e-mailed Bob about it here's what he said:
The LTCC does not curently support a single crank sensor.
This is planned for a future upgrade.
Bob
Apparently I misunderstood how the LTCC works. I assumed it took the output signal from the PCM to the ignition control module and somehow converted it to drive the individual coils. Apparently it still needs the low res signal from the Opti.
However, when I e-mailed Bob about it here's what he said:
The LTCC does not curently support a single crank sensor.
This is planned for a future upgrade.
Bob
09-30-2003, 09:37 AM
#63
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Join Date: Nov 1998
Location: Hell was full so they sent me to NJ
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Originally posted by slowpoke96z28
what about the Dynotech piece? anyone used it?
what about the Dynotech piece? anyone used it?
09-30-2003, 09:40 AM
#64
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Join Date: Nov 1998
Location: Hell was full so they sent me to NJ
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Originally posted by scoobysnax83
Its main purpose is to remove the High res pulse from the opti, preventing corrosion and extra wear, in turn extending opti life and adding 8 coils for a cleaner spark.
Its main purpose is to remove the High res pulse from the opti, preventing corrosion and extra wear, in turn extending opti life and adding 8 coils for a cleaner spark.
09-30-2003, 01:50 PM
#65
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Join Date: Sep 2002
Location: Arlington, VA
Posts: 2,481
Originally posted by Injuneer
Doesn't remove the "high resolution pulse". It removes the high voltage spark distribution. Removing that removes the source of ozone generation, and its contribution to corrosion.
Doesn't remove the "high resolution pulse". It removes the high voltage spark distribution. Removing that removes the source of ozone generation, and its contribution to corrosion.
10-01-2003, 12:28 PM
#66
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Join Date: Nov 1998
Location: Hell was full so they sent me to NJ
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Originally posted by scoobysnax83
OK, I'm sorry that I was not more specific. I wasn't stating that the high res signal was removed altogether, its simply relocated outside of the opti...
OK, I'm sorry that I was not more specific. I wasn't stating that the high res signal was removed altogether, its simply relocated outside of the opti...
The only thing you do with the LTCC is remove the coil wire and the 8 plug wires from the Opti. The Opti internals remain unchanged... although you could remove the rotor if you were so inclined. The optical "module" stays right where it always was and functions just like it always did. The little wheel is still there, spinning around, the light emitter is still there, the light receptors are still there, the high resolution and low resolution pulses are still being generated and sent out of the case in the same way. It's just how these signals are used at the PCM/LTCC end that is different.
10-01-2003, 01:56 PM
#67
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Join Date: Sep 2002
Location: Arlington, VA
Posts: 2,481
Gotcha, I know that the high voltage fires the coils, but I thought that the LTCC generated the high res signal for the PCM. I'm sure once I get my hands on one (real soon) I will understand it better 
10-07-2003, 05:41 PM
#69
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Join Date: Oct 2003
Location: Portsmouth, Ohio
Posts: 447
Question
I don't have to remove my old OptiSpark for this Conversion? All the LTCC needs is the Optical Sensor right? Does it matter which way I connect the plug wires to the Coils?
Last edited by 1FstFormulaV8; 10-07-2003 at 05:56 PM.
10-08-2003, 08:03 AM
#70
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Location: Hell was full so they sent me to NJ
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You need to leave the Opti case inplace on the front of the engine. You need to have the optical module in the case, and functioning. You do not need the rotor in the case (but you can just leave it in there, rather than rip the unit aprat to remove the rotor), and do not need to attach the coil or plug wires.
From the moderators point of view.... I would suggest that posts like how does it work and how do I install it be posted on "LT1 Tech". There are a growing number of knowledgeable people who post on that forum and have been using the LTCC unit for a while.
From the moderators point of view.... I would suggest that posts like how does it work and how do I install it be posted on "LT1 Tech". There are a growing number of knowledgeable people who post on that forum and have been using the LTCC unit for a while.
10-30-2003, 03:46 PM
#74
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Join Date: Dec 1999
Location: Jacksonville, Fl
Posts: 43
Has anyone found out how many things you can run off the white wire, such as window switches, shift lights, tachs? I had 2 window swithes, a shift light and my dash tach running off my MSD. If I connect all these up with the LTCC (MSD removed) the engine shuts off. I haven't had a chance to connect one at a time to see how many will work.
02-04-2004, 10:27 PM
#75
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Join Date: Feb 2000
Location: Seattle, WA
Posts: 1,445
Originally posted by RonnieW
Has anyone found out how many things you can run off the white wire, such as window switches, shift lights, tachs? I had 2 window swithes, a shift light and my dash tach running off my MSD. If I connect all these up with the LTCC (MSD removed) the engine shuts off. I haven't had a chance to connect one at a time to see how many will work.
Has anyone found out how many things you can run off the white wire, such as window switches, shift lights, tachs? I had 2 window swithes, a shift light and my dash tach running off my MSD. If I connect all these up with the LTCC (MSD removed) the engine shuts off. I haven't had a chance to connect one at a time to see how many will work.
