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Originally Posted by maxferran
3.6 with Motec Engine management... Whatever the heck that is!
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Motec is a complete, self contained engine management system. It uses the engine's existing sensors, or sometimes additional ones, to determine fuel and spark timing. There are several systems on the market that do this, I've had a Haltech (another manufacturer) running my rotary engine for a few years that I tuned. It's a big job and it takes a long time to get it right.
These systems allow complete control over the mixture and spark timing of the engine, you don't have to go through the stock ECU at all. The stock ECU is typically completely removed from the car, or at least severely crippled so that it doesn't actually control the engine itself.
It doesn't use a MAF to sense load, so no more fouling, but every time you make a change to the engine, including intake and exhaust, you have to re-tune because it's MAP based.