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For a stand alone also throw some type of wideband o2 in there. Whether that means buying it yourself or paying a shop to use one on the dyno. Normally when tuning you set a conservative timing map, then adjust the injector pulsewidth to get the desired a/f ratio, THEN advance timing slowly until you get knock.
Standalones are not for everyone. It's not incredibly hard, but I would not say it is easy either. It takes time, but you HAVE to actually understand how a engine itself works. If you think "you shoot in fuel, valve opens, piston is coming up, valve closes, fire plug, open exhaust valve", well um you probably shouldn't get a stand alone yet.
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Nick Drake
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