I thought you were using dual triggers and dual ICMs? That would mean that you wouldn't need to change the trigger angle, because the ECM wouldn't know about the other ECM controlling the other 3...

Have you tried swapping ECMs from "main" to "secondary" and visa-versa to see if it's an ECM issue?

It's been a while since I read about the physical connections in this thread, but IIRC he was using one ECM for both spark and fuel and the second ECM for spark only. I can see how keeping the second...

Two sessions of Tuner Pro is possible, but not connected to two separate devices from each session. Only one session at a time can be connected to external hardware. This can be a bit annoying when...

Yes it is, I have one sitting here to go into a friend's car where we're replacing the FAST system that never worked right. The engine in s a built Pontiac 496. We're also going from TBI to MPFI.

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That sounds like the MS3Pro, which while it is a great system, is the most expensive version and is WAY overkill for any TBI set-up. An MS2 will have more than you need, but I think is the cheaapest...

Well established by whom? There are (single) ECMs that will run an oddfire engine without issue, definitely in the aftermarket, and I'm sure the same could be done with an OEM ECM as well with the...

There's no real documentation for dual ECMs like you're trying to do. The only dual ECM engines I know of run each half of the engine COMPLETELY independent of one another. The ONLY common part is...

I'm all for oddball things, but somethings you just need to step back and look at and realize that they just aren't worth the hassle.

I'm sure you get the engine to run, but I see it being...

I also have to question the dual ECMs...

You're just setting yourself up for a world of hair pulling nightmares trying to run two ECMs on a single engine. As Delcowizzid was saying there's an HEI...