I've been having this really weird ignition problem that I've been trying to diagnose for the last 6 months. To start with, it's a widebody '79 with a streetported 13b w/ 3mm seals, low compression race rotors, To4b turbo, watercooled intercooler, 48IDF throttle body, 750cc primaries, 850cc secondaries, EMS 4424 Stinger computer, 88 distributor, electric fan, pulleys, etc. Now, I programmed in the ignition and fuel maps, as well as all the "parameters" into the ECU that were supplied from the company that makes it (A.E.M. in Australia --- www.enginemanagement.com.au ). It'll start right up, idle pretty well when it's warm, and revjust fine, but as soon as I pull out of the driveway and into the street to drive it, it feels really erratic and the ignition seems as if it's missing a helluva lot!!! I've checked the timing and it's not exactly the steadiest spark, and sa if I hold it around 2000 - 3000 rpms, I can't even find the timing marks!!! It's like it advanced 100 degrees!!! Well, I've pretty much narrowed it down to either the distributor and/ or ignitors. I'm actually waiting for a 4 coil ignitor module from Australia, and I'm hoping that it'll fix my problem. There's alot more that I've quadruple checked, but I don't feel like boring the **** outta you guys. If you got any ideas, let me know!!!

P.S: yeah, I made sure that what I programmed into the ECU was correct!)

 

well you have to understand more about aftermarket fuel injection.
The map that they give you is a base map, that means that the car can start, then i has to be tuned by a professional, especially the ignition map. If this is not done properly, you will definitely kill your engine and perhaps your turbo as well.

So find someone around that can tune rotaries, or find a wideband O2 sensor and learn all about rotary ignition and then tune it yourself. Of course I recommend the first way.

Good luck