Any car stock or not benefits greatly from a properly tuned EMS. Back on topic though, you probably won't find many properly tuned cars here unless they're serious builders. The sad reality is drifters are pretty damned broke. Even the ones with money still settle for garbage EMS's like Power FC, Nistune and other similar standalones. For a nice and healthy tuned engine you really need separate cylinder fuel control and a rock solid, stable ignition system. Something along the lines of LinkG4, Haltech, or GEMS.
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