I'm up to the point in my MSII/PCB3.0 build where I have to start installing the ignition system. I've been through the manual, the install article and the Toyota VAST specific documentation that is online. I wanted to post this issue here to see if I'm overlooking anything.
Form what I've seen the distributor in teh VAST system puts out a signal similar to a VR signal, but this is converted to a square wave by the Toyota ignition module for the ECU to use. I'd like to get the car up and running first with the stock ignition system, but will shortly convert to the MSD ignition. If i remove the stock ignition module it appears that I'll lose this square wave back to the ECU when I convert to a MSD system, should I then just try to use the VR signal that is output directly from the distributor?
I'd appreciate any input on this subject and would especially like to hear from anyone that has sucessfully run a Megasquirt AW11 with a MSD ignition. Thanks for the help.
-Kyle
Toyota 4AGE MR-2 with MSD-6A
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Read the manual to see if your question is answered there before posting. Many users will not reply if the answer is already available in the manual.
If your question is about troubleshooting, configuration, or tuning, you MUST include your processor type (MS-I or MS-II) and code version in your post. If your question is about PCB assembly or modifications, you must also include the main board version number (1.01, 2.2 or 3.0). For tuning/troubleshooting questions, please attached a datalog and your MSQ file to your post.
If you have questions about MS1/Extra or MS2/Extra code configuration or tuning, please post them at www.msextra.com Such questions posted here will be moved to: a temporary MSextra sub-forum, where they will be removed after 7 days
The full forum rules are here: Forum Rules, be sure to read them all regularly.
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kspringer80
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Matt Cramer
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Re: Toyota 4AGE MR-2 with MSD-6A
The VAST module does convert the VR sine wave to a square wave. If going MSD, I'd just keep the VAST module in there and trigger the MSD off the stock coil negative wire.
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kspringer80
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Re: Toyota 4AGE MR-2 with MSD-6A
I would keep the stock ignition driver and ignition coil, firing the MSD with the stock coil which would then fire the crane cams coil that I'll be using? This seems like I'd be asking for trouble, firing a different ignition system with the stock ignition system.
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kspringer80
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Re: Toyota 4AGE MR-2 with MSD-6A
Matt, I looked up the MSD install information again and I see what you're talking about. I'll take a closer look at it again tonight and I think I'll go ahead with soldering the ignition portion of the board. Thanks again!