rx7locost wrote:
Again my std disclaimer: I'm no expert on this. It looks like that Nodiz is a pretty neat system. It is plug and play for a stock Duratec installation. It is capable of 2D and 3D maps. If I understand it, 3D adds ignition low load advance inferred via a TPS. 3D gives better burn at low load and higher MPG. In order to use 3D with the Webers, one would need to add a tps sensor and possibly a regulated supply voltage. Perhaps that is documented somewhere in their install manual.
There is also the competing Megajolt system that uses manifold vacuum for sensing load instead of a TPS. However, it is a bit more complicated install requiring an additional Ford EDIS-4 module. Kits for the Megajolt on a Duratec run about the same cost as the Nodiz.
Both systems would need a Ford coil pack.
If 2D ignition is all that is required (as in the Q4R system) then the Nodiz should be pretty slick right out of the box if you can't get the Q4R system going.
Yeah, that's our thinking as well. The Q4R unit on my buddy's engine does run, and does gradually dial in a bunch more advance by 2500 RPM or so, so theoretically it should work great.
On the other hand, the Nodiz system seems a LOT simpler to set up, and to monitor, as well. You only have to get its initial timing somewhere in the same time zone as it needs to be, and the in-unit timing adjustments can take care of the rest. It would be nice to not only know your ignition map, and to see it in action, but to be able to adjust it as well, while the engine's running.
To be honest, if I were to recommend a standalone ignition for a Locost (one that doesn't require programming experience, for example!), I'd be mentioning the Nodiz. If I hadn't already invested heavily in my Q4R unit, I'd be moving to the Nodiz myself at this point. The Megajolt units are kind of an "industry standard" now, but trying to set up a manifold vacuum system for 3D mapping is fraught with issues on DCOE Webers, unless they're on a log manifold of some kind, where a non-pulsing, steady vacuum source can be found.
I'm using Webers, so if I wanted 3D mapping I'd have to add a TPS. The ones to fit Webers are VERY expensive, but I have one from the original intake system for my Zetec, and I believe it would be fairly simple (if finnicky) to adapt it to my Webers. That would be truly "locost", as well!
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